<SUBMISSION>
<ACCESSION-NUMBER>0000936392-05-000377
<TYPE>S-8
<PUBLIC-DOCUMENT-COUNT>4
<FILING-DATE>20051109
<DATE-OF-FILING-DATE-CHANGE>20051109
<EFFECTIVENESS-DATE>20051109
<FILER>
<COMPANY-DATA>
<CONFORMED-NAME>ILLUMINA INC
<CIK>0001110803
<ASSIGNED-SIC>3826
<IRS-NUMBER>330804655
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>0101
</COMPANY-DATA>
<FILING-VALUES>
<FORM-TYPE>S-8
<ACT>33
<FILE-NUMBER>333-129611
<FILM-NUMBER>051191153
</FILING-VALUES>
<BUSINESS-ADDRESS>
<STREET1>9885 TOWNE CENTRE DRIVE
<CITY>SAN DIEGO
<STATE>CA
<ZIP>92121
<PHONE>8582024500
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>9885 TOWNE CENTRE DRIVE
<CITY>SAN DIEGO
<STATE>CA
<ZIP>92121
</MAIL-ADDRESS>
</FILER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>a14180sv8.htm
<DESCRIPTION>FORM S-8
<TEXT>
<HTML>
<HEAD>
<TITLE>sv8</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">




<DIV align="center" style="font-size: 10pt; margin-top: 18pt"><B>As
filed with the Securities and Exchange Commission on November 9, 2005</B>
</DIV>


<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>Registration No.&nbsp;333-</B>
</DIV>


<DIV style="width: 100%; border-bottom: 2pt solid black; font-size: 1pt">&nbsp;</DIV>
<DIV style="width: 100%; border-bottom: 1pt solid black; font-size: 1pt">&nbsp;</DIV>






<DIV align="center" style="font-size: 14pt; margin-top: 12pt"><B>UNITED STATES SECURITIES AND EXCHANGE COMMISSION</B>
</DIV>

<DIV align="center" style="font-size: 12pt"><B>Washington, D.C. 20549</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 18pt; margin-top: 12pt"><B>FORM S-8</B>
</DIV>


<DIV align="center" style="font-size: 12pt; margin-top: 12pt"><B>REGISTRATION STATEMENT<BR>
UNDER<BR>
THE SECURITIES ACT OF 1933</B>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 24pt; margin-top: 12pt"><B>ILLUMINA, INC.</B>
</DIV>

<DIV align="center" style="font-size: 10pt">(Exact name of registrant as specified in its charter)</DIV>


<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="47%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="47%">&nbsp;</TD>
</TR>
<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD align="center" valign="top"><B>Delaware</B><BR>
(State or other jurisdiction of<BR>
incorporation or organization)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>33-0804655</B><BR>
(I.R.S. Employer<BR>
Identification No.)</TD>
</TR>
<TR valign="bottom"><!-- Blank Space -->
    <TD align="center" valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD align="center" valign="top"><B>9885 Towne Centre Drive<BR>
San Diego, California</B><BR>
(Address of principal executive offices)
</TD>
    <TD>&nbsp;</TD>
    <TD align="center" valign="top"><B>92121</B><BR>
 (Zip code)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>2005 Stock and Incentive Plan</B><BR>
(Full title of plan)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Jay T. Flatley<BR>
President and Chief Executive Officer<BR>
Illumina, Inc.<BR>
9885 Towne Centre Drive, San Diego, California 92121</B><BR>
(Name and address of agent for service)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>(858)&nbsp;202-4500</B><BR>
(Telephone number, including area code, of agent for service)</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><DIV align="center"><DIV style="font-size: 3pt; margin-top: 16pt; width: 26%; border-top: 1px solid #000000">&nbsp;</DIV></DIV></DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 12pt"><B>Calculation of Registration Fee</B></DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="1%">&nbsp;</TD>
    <TD width="54%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="2%">&nbsp;</TD><!-- VRule -->
    <TD width="2%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>

    <TD width="1%">&nbsp;</TD>
</TR><TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="21" style="border-bottom: 3px double #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Proposed maximum</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount to be</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>offering price per</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>aggregate offering</B></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>Amount of</B></TD>
    <TD>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">    <TD width="1%">&nbsp;</TD>

    <TD nowrap align="left"><B>Title of securities to be registered</B></TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>registered</B><SUP style="font-size: 85%; vertical-align: text-top"><B>(1)</B></sup></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>share</B><SUP style="font-size: 85%; vertical-align: text-top"><B>(2)</B></SUP></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>price</B><SUP style="font-size: 85%; vertical-align: text-top"><B>(2)</B></SUP></TD>
    <TD>&nbsp;</TD>
    <TD style="border-right: 2px solid #000000">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center" colspan="2"><B>registration fee</B></TD>
    <TD>&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom">
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
                    <TD style="border-top: 2px solid #000000"><DIV style="margin-left:15px; text-indent:-15px">Common stock, par value $0.01 per
share, including related rights to
purchase Series&nbsp;A Junior Participating
Preferred Stock<SUP style="font-size: 85%; vertical-align: text-top">(3)</SUP></DIV></TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD colspan="3" align="center" style="border-top: 2px solid #000000">11,542,358 shares</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="left" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">15.525</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="left" style="border-top: 2px solid #000000">$</TD>

<TD align="right" style="border-top: 2px solid #000000">179,195,108</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-right: 2px solid #000000; border-top: 2px solid #000000">&nbsp;</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD align="left" style="border-top: 2px solid #000000">$</TD>
    <TD align="right" style="border-top: 2px solid #000000">21,092</TD>
    <TD style="border-top: 2px solid #000000">&nbsp;</TD>
    <TD width="1%" style="border-top: 2px solid #000000">&nbsp;</TD>
</TR>
<TR style="font-size: 1px" valign="bottom">
    <TD nowrap align="left" colspan="21" style="border-top: 3px double #000000">&nbsp;</TD>
</TR>

<!-- End Table Body -->
</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">(1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Pursuant to Rule&nbsp;416 under the Securities Act of 1933, the number of shares of common stock
registered hereby includes an indeterminate number of shares of common stock that may be
issued in connection with stock splits, stock dividends or similar transactions.</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">(2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Estimated pursuant to Rule 457(h) and Rule 457(c) solely for purposes of calculating the
amount of registration fee, based on the average of the high and low prices of the
registrant&#146;s common stock as reported on The Nasdaq National
Market on November 4, 2005.</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">(3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Each share of the registrant&#146;s common stock being registered hereunder, if issued before the
termination of the registrant&#146;s preferred share rights agreement, includes Series&nbsp;A Junior Participating
Preferred Stock purchase rights. Before the occurrence of certain events, the Series&nbsp;A Junior
Participating Preferred Stock purchase rights will not be exercisable or evidenced separately
from the registrant&#146;s common stock and have no value except as reflected in the market price
of the shares to which they are attached.</TD>
</TR>

</TABLE>
</DIV>


<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>

<DIV style="font-family: 'Times New Roman',Times,serif">




<!-- TOC -->
<A name="toc"><DIV align="CENTER" style="page-break-before:always"><U><B>TABLE OF CONTENTS</B></U></DIV></A>

<P><CENTER>
<TABLE border="0" width="90%" cellpadding="0" cellspacing="0">
<TR>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="3%"></TD>
	<TD width="76%"></TD>
</TR>
<TR><TD></TD><TD colspan="8"><A HREF="#000">Part I</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#001">Part II</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#002">Item&nbsp;3. Incorporation of Documents by Reference.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#003">Item&nbsp;4. Description of Securities.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#004">Item&nbsp;5. Interests of Named Experts and Counsel.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#005">Item&nbsp;6. Indemnification of Directors and Officers.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#006">Item&nbsp;7. Exemption from Registration Claimed.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#007">Item&nbsp;8. Exhibits.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#008">Item&nbsp;9. Undertakings.</A></TD></TR>
<TR><TD></TD><TD colspan="8"><A HREF="#009">Signatures</A></TD></TR>
<TR><TD colspan="9"><A HREF="a14180exv5w1.htm">EXHIBIT 5.1</A></TD></TR>
<TR><TD colspan="9"><A HREF="a14180exv23w1.htm">EXHIBIT 23.1</A></TD></TR>
<TR><TD colspan="9"><A HREF="a14180exv23w2.htm">EXHIBIT 23.2</A></TD></TR>
</TABLE>
</CENTER>
<!-- /TOC -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>






<!-- link2 "Part I" -->
<DIV align="left"><A NAME="000"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Part I</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>INFORMATION REQUIRED IN THE SECTION 10(a) PROSPECTUS</B>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">The document(s) containing the information specified in Part&nbsp;I of Form S-8 have been or will be
sent or given to employees in accordance with Rule&nbsp;428 under the Securities Act of 1933, as
amended.
</DIV>

<!-- link2 "Part II" -->
<DIV align="left"><A NAME="001"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Part II</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>INFORMATION REQUIRED IN THE REGISTRATION STATEMENT</B>
</DIV>

<!-- link2 "Item&nbsp;3. Incorporation of Documents by Reference." -->
<DIV align="left"><A NAME="002"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;3. Incorporation of Documents by Reference.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">The SEC allows us to &#147;incorporate by reference&#148; into this registration statement the information we
have filed with the SEC. Any statement in a document we incorporate by reference into this
registration statement will be considered to be modified or superseded to the extent a statement
contained in this registration statement or any other subsequently filed document that is
incorporated by reference into this registration statement modifies or supersedes that statement.
The modified or superseded statement will not be considered to be a part of this registration
statement, except as modified or superseded.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We incorporate by reference into this registration statement the information contained in the
documents listed below, which is considered to be a part of this registration statement:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>our annual report on Form 10-K for the fiscal year ended January
2, 2005, filed with the SEC on March&nbsp;8, 2005, as amended on Form
10-K/As, filed with the SEC on March&nbsp;29, 2005 and April&nbsp;28, 2004
(file no. 000-30361);</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>our quarterly reports filed on Form 10-Q for the fiscal quarters
ended April&nbsp;3, 2005, July&nbsp;3, 2005 and October&nbsp;2, 2005, filed with the SEC on April
29, 2005, August&nbsp;8, 2005 and November&nbsp;3, 2005, respectively (file no. 000-30361);</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>our current reports on Form 8-K, excluding the portions that were
&#147;furnished&#148; (and not &#147;filed&#148;) in accordance with SEC rules, filed
with the SEC on February&nbsp;22, 2005, February&nbsp;24, 2005, March&nbsp;3,
2005, April&nbsp;14, 2005, April&nbsp;15, 2005, May&nbsp;4, 2005, June&nbsp;21, 2005
and July&nbsp;5, 2005 (file no. 000-30361);</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>the description of our common stock contained in our registration
statement on Form 8-A, filed with the SEC on April&nbsp;14, 2000,
including any amendments or reports filed for the purpose of
updating such description (file no. 000-30361);</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The description of our preferred stock purchase rights contained
in our registration statement on Form 8-A, filed with the SEC on
May&nbsp;14, 2001, including any amendments or reports filed for the
purpose of updating such description (file no. 000-30361); and</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left"><B>&#149;</B></TD>
    <TD width="1%">&nbsp;</TD>
    <TD>all documents subsequently filed by us pursuant to Sections&nbsp;13(a),
13(c), 14 and 15(d) of the Securities Exchange Act of 1934, as
amended, prior to the filing of a post-effective amendment which
indicates that all securities offered under this registration
statement have been sold or which deregisters all securities then
remaining unsold.</TD>
</TR>

</TABLE>
</DIV>
<P align="center" style="font-size: 10pt">1
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV style="margin-top: 6pt"><TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">



</TABLE>
</DIV>
<!-- link2 "Item&nbsp;4. Description of Securities." -->
<DIV align="left"><A NAME="003"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;4. Description of Securities.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Not applicable.
</DIV>
<!-- link2 "Item&nbsp;5. Interests of Named Experts and Counsel." -->
<DIV align="left"><A NAME="004"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;5. Interests of Named Experts and Counsel.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">None.
</DIV>
<!-- link2 "Item&nbsp;6. Indemnification of Directors and Officers." -->
<DIV align="left"><A NAME="005"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;6. Indemnification of Directors and Officers.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Our amended and restated certificate of incorporation and bylaws include provisions that eliminate
the personal liability of our directors for monetary damages resulting from breaches of their
fiduciary duty, and require us to indemnify our directors and officers, in each case to the fullest
extent permitted by the Delaware General Corporation Law (the &#147;DGCL&#148;). Pursuant to Section&nbsp;145 of
the DGCL, a corporation generally has the power to indemnify its present and former directors,
officers, employees and agents against expenses incurred by them in connection with any suit to
which they are, or are threatened to be made, a party by reason of their serving in such positions
so long as they acted in good faith and in a manner that they reasonably believed to be in, or not
opposed to, the best interests of the corporation and, with respect to any criminal action, had no
reasonable cause to believe their conduct was unlawful. These provisions do not eliminate the
directors&#146; duty of care, and, in appropriate circumstances, equitable remedies such as injunctive
or other forms of non-monetary relief may remain available under Delaware law. In addition, each
director will continue to be subject to liability for breach of the director&#146;s duty of loyalty to
us, for acts or omissions not in good faith or involving intentional misconduct, for knowing
violations of law, for acts or omissions that the director believes to be contrary to the best
interests of us or our stockholders, for any transaction from which the director derived an
improper personal benefit, for acts or omissions involving a reckless disregard for the director&#146;s
duty to us or our stockholders when the director was aware or should have been aware of a risk of
serious injury to us or our stockholders, for acts or omissions that constitute an unexcused
pattern of inattention that amounts to an abdication of the director&#146;s duty to us or our
stockholders, for improper transactions between the director and us and for improper distributions
to stockholders and loans to directors and officers. The provision also does not affect a
director&#146;s responsibilities under any other law, such as the federal securities laws.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We have
entered into indemnification agreements with Jay T. Flatley, John R.
Stuelpnagel, David L. Barker, Robert C. Kain, William H. Rastetter
and David R. Walt.
These indemnification agreements generally indemnify these individuals to the fullest extent
permitted by law and require us to advance to the individual any and all expenses (including
attorneys&#146; fees) incurred in investigating or defending covered claims, subject to certain
exceptions.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Section&nbsp;145 also provides that a corporation has the power to maintain insurance on behalf of its
officers and directors against any liability asserted against any such person and incurred by him
or her in such capacity, or arising out of his or her status as such, whether or not the
corporation would have the power to indemnify him or her against such liability under the
provisions of Section&nbsp;145. We currently maintain directors&#146; and officers&#146; liability insurance.
</DIV>
<!-- link2 "Item&nbsp;7. Exemption from Registration Claimed." -->
<DIV align="left"><A NAME="006"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;7. Exemption from Registration Claimed.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Not applicable.
</DIV>

<P align="center" style="font-size: 10pt">2
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">
<!-- link2 "Item&nbsp;8. Exhibits." -->
<DIV align="left"><A NAME="007"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;8. Exhibits.</B>
</DIV>

<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="10%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="85%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Exhibit</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="center">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="left"><B>Number</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Description</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR style="font-size: 1px">
    <TD colspan="3" valign="top" align="left" style="border-top: 1px solid #000000">&nbsp;</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.1<SUP style="font-size: 85%; vertical-align: text-top">(1)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Specimen common stock certificate</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.2<SUP style="font-size: 85%; vertical-align: text-top">(2)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Amended and Restated Stockholder Rights Agreement, dated
as of November&nbsp;5, 1999, by and among Illumina, Inc. and
certain stockholders of Illumina, Inc.</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.3<SUP style="font-size: 85%; vertical-align: text-top">(3)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Rights Agreement, dated as of May&nbsp;3, 2001, between
Illumina, Inc. and Equiserve Trust Company, N.A.</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">4.4<SUP style="font-size: 85%; vertical-align: text-top">(4)</SUP>
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">2005 Stock and Incentive Plan</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">5.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Opinion of Dewey Ballantine LLP, counsel to Illumina,
Inc., regarding the legality of the common stock being
registered</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Ernst &#038; Young LLP, independent auditors</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.2
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Ernst &#038; Young LLP, independent auditors</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">23.3
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Consent of Dewey Ballantine LLP (contained in exhibit 5.1)</TD>
</TR>
<TR valign="bottom">
    <TD valign="top"><DIV style="margin-left:0px; text-indent:-0px">24.1
</DIV></TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">Power of attorney (contained in signature page)</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><DIV align="left"><DIV style="font-size: 3pt; margin-top: 13pt; width: 18%; border-bottom: 1px solid #000000">&nbsp;</DIV></DIV>
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(1)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Incorporated by reference to Exhibit&nbsp;4.1 to Illumina,
Inc.'s registration statement on Form S-1
(File No.&nbsp;333-33922) filed with the SEC on April&nbsp;3, 2000, as amended.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(2)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Incorporated by reference to Exhibit&nbsp;4.2 to Illumina,
Inc.'s registration statement on Form S-1 (File No.
333-33922) filed with the SEC on April&nbsp;3, 2000, as amended.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(3)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Incorporated by reference to Exhibit&nbsp;4.3 to Illumina,
Inc.'s registration statement on Form 8-A (File No.
000-30361) filed with the SEC on May&nbsp;14, 2001.</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">(4)</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>Incorporated by reference to Appendix&nbsp;A of Illumina,
Inc.'s definitive proxy statement on Schedule&nbsp;14A
(File No.&nbsp;000-30361) filed with the SEC on May&nbsp;17, 2005.</TD>
</TR>

</TABLE>
</DIV>
<!-- link2 "Item&nbsp;9. Undertakings." -->
<DIV align="left"><A NAME="008"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Item&nbsp;9. Undertakings.</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt">The undersigned registrant hereby undertakes
</DIV>


<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="2%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">1.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>to file, during any period in which offers or sales are being made, a post-effective
amendment to this registration statement:</TD>
</TR>

</TABLE>
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">a.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>to include any prospectus required by Section&nbsp;10(a)(3) of the Securities Act of 1933;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">b.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>to reflect in the prospectus any facts or events arising after the effective date of
the registration statement (or the most recent post-effective amendment thereof) which,
individually or in the aggregate, represent a fundamental change in the information set
forth in the registration statement. Notwithstanding the foregoing, any increase or
decrease in volume of securities offered (if the total dollar value of securities offered
would not exceed that which was registered) and any deviation from the low or high end of
the estimated maximum offering range may be reflected in the form of prospectus filed with
the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and
price represent no more than a 20% change in the maximum aggregate offering price set forth
in the &#147;Calculation of Registration Fee&#148; table in the effective registration statement;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="6%" style="background: transparent">&nbsp;</TD>
    <TD width="3%" nowrap align="left">c.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>to include any material information with respect to the plan of distribution not
previously disclosed in the registration statement or any material change to such
information in the registration statement;</TD>
</TR>

</TABLE>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 6%"><I>provided, however</I>, that paragraphs (1)(a) and (1)(b) do not apply if the registration statement
is on Form S-3 or Form S-8 or Form F-3, and the information required to be included in a
post-effective amendment by those paragraphs is contained in periodic reports filed with or
furnished to the
</DIV>

<P align="center" style="font-size: 10pt">3
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">


<DIV align="left" style="font-size: 10pt; margin-top: 6pt; margin-left: 4%">Commission by the registrant pursuant to Section&nbsp;13 or Section 15(d) of the Securities Exchange
Act of 1934 that are incorporated by reference in the registration statement.
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">2.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>that, for the purpose of determining any liability under the Securities Act of 1933, each
such post-effective amendment shall be deemed to be a new registration statement relating to
the securities offered therein, and the offering of such securities at that time shall be
deemed to be the initial <I>bona fide </I>offering thereof;</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">3.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>to remove from registration by means of a post-effective amendment any of the securities
being registered which remain unsold at the termination of the offering.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">The undersigned registrant hereby undertakes that, for purposes of determining any liability under
the Securities Act of 1933, each filing of the registrant&#146;s annual report pursuant to Section 13(a)
or Section 15(d) of the Securities Exchange Act of 1934 (and, where applicable, each filing of an
employee benefit plan&#146;s annual report pursuant to Section 15(d) of the Securities Exchange Act of
1934) that is incorporated by reference in the registration statement shall be deemed to be a new
registration statement relating to the securities offered therein, and the offering of such
securities at that time shall be deemed to be the initial <I>bona fide </I>offering thereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be
permitted to directors, officers and controlling persons of the registrant pursuant to the
foregoing provisions, or otherwise, the registrant has been advised that in the opinion of the
Securities and Exchange Commission such indemnification is against public policy as expressed in
the Act and is, therefore, unenforceable. In the event that a claim for indemnification against
such liabilities (other than the payment by the registrant of expenses incurred or paid by a
director, officer or controlling person of the registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person in connection with
the securities being registered, the registrant will, unless in the opinion of its counsel the
matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the
question whether such indemnification by it is against public policy as expressed in the Act and
will be governed by the final adjudication of such issue.
</DIV>


<P align="center" style="font-size: 10pt">4
</DIV>

<!-- PAGEBREAK -->
<P><HR noshade><P>
<H5 align="left" style="page-break-before:always"><A HREF="#toc">Table of Contents</A></H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">



<!-- link2 "Signatures" -->
<DIV align="left"><A NAME="009"></A></DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>Signatures</B>
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Pursuant to the requirements of the Securities Act of 1933, the registrant certifies that it
has reasonable grounds to believe that it meets all of the requirements for filing on Form S-8 and
has duly caused this registration statement to be signed on its behalf by the undersigned,
thereunto duly authorized, in the City of San Diego, State of
California, on November&nbsp;9, 2005.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left"><FONT style="font-variant: SMALL-CAPS">Illumina, Inc.</FONT><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD valign="top">By:&nbsp;&nbsp;</TD>
    <TD colspan="2" style="border-bottom: 1px solid #000000" align="left"><FONT style="font-variant: SMALL-CAPS">/S/ Jay T. Flatley</FONT>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">Jay T. Flatley&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD colspan="2" align="left">President and Chief Executive Officer&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>


<DIV align="left" style="font-size: 10pt; margin-top: 12pt"><B>POWER OF ATTORNEY</B>
</DIV>



<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Each
person whose signature appears below constitutes and appoints Jay T.
Flatley and Christian O.
Henry, and each of them acting individually, as his or her attorney-in-fact, for him or her in any
and all capacities, to sign any amendments (including post-effective amendments) to this
registration statement and to file the same, with exhibits thereto and other documents in
connection therewith, with the Securities and Exchange Commission, hereby ratifying and confirming
all that each attorney-in-fact, or his or her substitute, may do or cause to be done by virtue
hereof.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Pursuant to the requirements of the Securities Act of 1933, this registration statement has been
signed by the following persons in the capacities and on the dates indicated.
</DIV>
<DIV align="center">
<TABLE style="font-size: 10pt" cellspacing="0" border="0" cellpadding="0" width="100%">
<!-- Begin Table Head -->
<TR valign="bottom">
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
    <TD width="5%">&nbsp;</TD>
    <TD width="30%">&nbsp;</TD>
</TR>
<TR style="font-size: 8pt" valign="bottom">
    <TD nowrap align="center"><B>Signature</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Title</B></TD>
    <TD>&nbsp;</TD>
    <TD nowrap align="left"><B>Date</B></TD>
</TR>

<!-- End Table Head -->
<!-- Begin Table Body -->
<TR valign="bottom"><!-- Blank Space -->
    <TD align="right">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top"><FONT style="font-variant: SMALL-CAPS">/S/ Jay T. Flatley</FONT>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Jay T. Flatley</TD>
    <TD>&nbsp;</TD>
    <TD align="left">
President, Chief Executive Officer<BR>
and director (principal executive <BR>
officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;9, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em"><!-- Blank Space -->
    <TD align="right">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top"><FONT style="font-variant: SMALL-CAPS">/S/ Christian O. Henry</FONT>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Christian O. Henry</TD>
    <TD>&nbsp;</TD>
    <TD align="left">
Vice President and Chief Financial<BR>
Officer (principal financial officer<BR>
and principal accounting officer)
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;9, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em"><!-- Blank Space -->
    <TD align="right">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top"><FONT style="font-variant: SMALL-CAPS">/S/ John R. Stuelpnagel</FONT>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
John R. Stuelpnagel</TD>
    <TD>&nbsp;</TD>
    <TD align="left">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;9, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em"><!-- Blank Space -->
    <TD align="right">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top"><FONT style="font-variant: SMALL-CAPS">/S/ Daniel M. Bradbury</FONT>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Daniel M. Bradbury</TD>
    <TD>&nbsp;</TD>
    <TD align="left">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;9, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em"><!-- Blank Space -->
    <TD align="right">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top"><FONT style="font-variant: SMALL-CAPS">/S/ Karin Eastham</FONT>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Karin Eastham</TD>
    <TD>&nbsp;</TD>
    <TD align="left">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;9, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em"><!-- Blank Space -->
    <TD align="right">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top"><FONT style="font-variant: SMALL-CAPS">/S/ Paul Grint</FONT>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
Paul Grint</TD>
    <TD>&nbsp;</TD>
    <TD align="left">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;9, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em"><!-- Blank Space -->
    <TD align="right">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top"><FONT style="font-variant: SMALL-CAPS">/S/ William H. Rastetter</FONT>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
William H. Rastetter</TD>
    <TD>&nbsp;</TD>
    <TD align="left">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;9, 2005</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em"><!-- Blank Space -->
    <TD align="right">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="center" nowrap valign="top">&nbsp;</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">&nbsp;</TD>
</TR>
<TR valign="bottom" style="padding-top: 1em">
    <TD align="center" nowrap valign="top"><FONT style="font-variant: SMALL-CAPS">/S/ David R. Walt</FONT>
<DIV style="font-size: 1pt; border-bottom: 1px solid #000000">&nbsp;</DIV>
David R. Walt</TD>
    <TD>&nbsp;</TD>
    <TD align="left">
Director
</TD>
    <TD>&nbsp;</TD>
    <TD align="left" valign="top">November&nbsp;9, 2005</TD>
</TR>
<!-- End Table Body -->
</TABLE>
</DIV>



<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>a14180exv5w1.htm
<DESCRIPTION>EXHIBIT 5.1
<TEXT>
<HTML>
<HEAD>
<TITLE>exv5w1</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">




<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>EXHIBIT
5.1</B>
</DIV>


<DIV align="center" style="font-size: 14pt; margin-top: 18pt">DEWEY BALLANTINE LLP
</DIV>


<DIV align="center" style="font-size: 8pt; margin-top: 18pt"><B>1301 AVENUE OF THE AMERICAS<BR>
NEW YORK, NEW YORK 10019-6092<BR>
TEL 212 259-8000 FAX 212 259-6333</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;November&nbsp;9, 2005
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Illumina, Inc.<BR>
9885 Towne Centre Drive<BR>
San Diego, CA 92121

</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 12pt">Ladies and Gentlemen:
</DIV>


<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We have acted as counsel to Illumina, Inc., a Delaware corporation (the &#147;<U>Company</U>&#148;), in
connection with the preparation and filing by the Company of a Registration Statement on Form S-8
(the &#147;<U>Registration Statement</U>&#148;) under the Securities Act of 1933, as amended (the
&#147;<U>Securities Act</U>&#148;), for the registration of 11,542,358 shares of the Company&#146;s common stock,
$0.01 par value per share (the &#147;<U>Shares</U>&#148;), which may be issued upon exercise of stock
options, stock appreciation rights, stock units and stock grants pursuant to the Company&#146;s 2005
Stock and Incentive Plan (the &#147;<U>Plan</U>&#148;).
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We have examined and are familiar with the originals or copies, certified or otherwise identified
to our satisfaction, of such documents, corporate records, certificates of public officials and
officers of the Company and such other instruments as we have deemed necessary or appropriate as a
basis for the opinions expressed below.
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">Based on the foregoing, we are of the opinion that:
</DIV>

<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">1.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>The issuance of the Shares under the Plan has been lawfully and duly authorized by the
Company; and</TD>
</TR>

<TR>
    <TD style="font-size: 6pt">&nbsp;</TD>
</TR><TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="3%" nowrap align="left">2.</TD>
    <TD width="1%">&nbsp;</TD>
    <TD>When the Shares have been issued and delivered in accordance with the terms of the Plan, the
Shares will be legally issued, fully paid and non-assessable.</TD>
</TR>

</TABLE>
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We hereby consent to the filing of this opinion as Exhibit&nbsp;5.1 to the Registration Statement. In
giving such consent, we do not thereby admit that we come within the category of persons whose
consent is required under Section&nbsp;7 of the Securities Act or the rules and regulations of the
Securities and Exchange Commission thereunder.
</DIV>

<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">Very truly yours,<BR>
<BR>
<BR>
<FONT style="font-variant: SMALL-CAPS">Dewey Ballantine llp</FONT><BR>
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<DIV align="center" style="font-size: 8pt; margin-top: 18pt">NEW YORK&nbsp;&nbsp;&nbsp; WASHINGTON, D.C.&nbsp;&nbsp;&nbsp; LOS ANGELES&nbsp;&nbsp;&nbsp; EAST PALO ALTO&nbsp;&nbsp;&nbsp; HOUSTON&nbsp;&nbsp;&nbsp; AUSTIN<BR>
LONDON&nbsp;&nbsp;&nbsp; WARSAW&nbsp;&nbsp;&nbsp; FRANKFURT &nbsp;&nbsp;&nbsp; MILAN &nbsp;&nbsp;&nbsp;ROME &nbsp;&nbsp;&nbsp;BEIJING &nbsp;&nbsp;&nbsp;PRAGUE (Associated Office)
</DIV>



<P align="center" style="font-size: 10pt">
</DIV>

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>a14180exv23w1.htm
<DESCRIPTION>EXHIBIT 23.1
<TEXT>
<HTML>
<HEAD>
<TITLE>exv23w1</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>
<DIV style="font-family: 'Times New Roman',Times,serif">



<DIV style="margin-top: 6pt">
<TABLE width="100%" border="0" cellpadding="0" cellspacing="0" style="font-size: 10pt">

<TR valign="top" style="font-size: 10pt; color: #000000; background: transparent">
    <TD width="1%" nowrap align="left">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD align="right"><B>EXHIBIT 23.1</B></TD>
</TR>

</TABLE>
</DIV>

<DIV align="center" style="font-size: 10pt; margin-top: 18pt">Consent of Independent Registered Public Accounting Firm
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to
the 2005 Stock and Incentive Plan of our reports dated February&nbsp;16, 2005, with respect to the
consolidated financial statements and schedule of Illumina, Inc., included in its Annual Report
(Form 10-K/A) for the year ended January&nbsp;2, 2005, Illumina, Inc. management&#146;s assessment of the
effectiveness of internal control over financial reporting, and the effectiveness of internal
control over financial reporting of Illumina, Inc., filed with the Securities and Exchange
Commission.
</DIV>


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">     /s/ Ernst &#038; Young LLP
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">San Diego, California<BR>
November&nbsp;4, 2005

</DIV>

<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.2
<SEQUENCE>4
<FILENAME>a14180exv23w2.htm
<DESCRIPTION>EXHIBIT 23.2
<TEXT>
<HTML>
<HEAD>
<TITLE>exv23w2</TITLE>
</HEAD>
<BODY bgcolor="#FFFFFF">
<!-- PAGEBREAK -->
<H5 align="left" style="page-break-before:always">&nbsp;</H5><P>

<DIV style="font-family: 'Times New Roman',Times,serif">

<DIV align="right" style="font-size: 10pt; margin-top: 12pt"><B>EXHIBIT 23.2</B>
</DIV>


<DIV align="center" style="font-size: 10pt; margin-top: 18pt">Consent of Ernst &#038; Young LLP, Independent Auditors
</DIV>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">We consent to the incorporation by reference in the Registration Statement (Form S-8) of Illumina,
Inc. pertaining to the 2005 Stock and Incentive Plan of Illumina, Inc. of our report dated February
22, 2005, with respect to the 2004 and 2003 financial statements of CyVera Corporation included in
a Current Report (Form 8-K/A) of Illumina, Inc., filed with the Securities and Exchange Commission.
</DIV>


<TABLE width="100%" border="0" cellspacing="0" cellpadding="0" style="font-size: 10pt">
<TR>
    <TD width="48%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="1%">&nbsp;</TD>
    <TD width="35%">&nbsp;</TD>
    <TD width="15%">&nbsp;</TD>
</TR>
<TR>
    <TD valign="top" align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">     /s/ Ernst &#038; Young LLP
&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR><TR>
    <TD align="left">&nbsp;</TD>
    <TD colspan="3" align="left">&nbsp;</TD>
    <TD>&nbsp;</TD>
</TR>
<TR>
    <TD colspan="5">&nbsp;</TD>
</TR>
</TABLE>

<DIV align="left" style="font-size: 10pt; margin-top: 6pt">San Diego, California<BR>
November&nbsp;4, 2005

</DIV>


<P align="center" style="font-size: 10pt">&nbsp;
</DIV>

</BODY>
</HTML>
</TEXT>
</DOCUMENT>
</SUBMISSION>
