<SUBMISSION>
<ACCESSION-NUMBER>0001193125-19-216755
<TYPE>FWP
<PUBLIC-DOCUMENT-COUNT>1
<FILING-DATE>20190808
<DATE-OF-FILING-DATE-CHANGE>20190808
<SUBJECT-COMPANY>
<COMPANY-DATA>
<CONFORMED-NAME>Magellan Midstream Partners, L.P.
<CIK>0001126975
<ASSIGNED-SIC>4610
<IRS-NUMBER>731599053
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
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<ACT>34
<FILE-NUMBER>333-223097
<FILM-NUMBER>191009307
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<BUSINESS-ADDRESS>
<STREET1>ONE WILLIAMS CENTER, MD 28-1
<CITY>TULSA
<STATE>OK
<ZIP>74172
<PHONE>918 574 7000
</BUSINESS-ADDRESS>
<MAIL-ADDRESS>
<STREET1>ONE WILLIAMS CENTER, MD 28-1
<CITY>TULSA
<STATE>OK
<ZIP>74172
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<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>MAGELLAN MIDSTREAM PARTNERS, L.P.
<DATE-CHANGED>20190718
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>MAGELLAN MIDSTREAM PARTNERS LP
<DATE-CHANGED>20030827
</FORMER-COMPANY>
<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>WILLIAMS ENERGY PARTNERS L P
<DATE-CHANGED>20001024
</FORMER-COMPANY>
</SUBJECT-COMPANY>
<FILED-BY>
<COMPANY-DATA>
<CONFORMED-NAME>Magellan Midstream Partners, L.P.
<CIK>0001126975
<ASSIGNED-SIC>4610
<IRS-NUMBER>731599053
<STATE-OF-INCORPORATION>DE
<FISCAL-YEAR-END>1231
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<STREET1>ONE WILLIAMS CENTER, MD 28-1
<CITY>TULSA
<STATE>OK
<ZIP>74172
<PHONE>918 574 7000
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<MAIL-ADDRESS>
<STREET1>ONE WILLIAMS CENTER, MD 28-1
<CITY>TULSA
<STATE>OK
<ZIP>74172
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<FORMER-CONFORMED-NAME>MAGELLAN MIDSTREAM PARTNERS, L.P.
<DATE-CHANGED>20190718
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<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>MAGELLAN MIDSTREAM PARTNERS LP
<DATE-CHANGED>20030827
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<FORMER-COMPANY>
<FORMER-CONFORMED-NAME>WILLIAMS ENERGY PARTNERS L P
<DATE-CHANGED>20001024
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<FILENAME>d781930dfwp.htm
<DESCRIPTION>FWP
<TEXT>
<HTML><HEAD>
<TITLE>FWP</TITLE>
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<Center><DIV STYLE="width:8.5in" align="left">
 <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right">Filed Pursuant to Rule 433 </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right">Issuer Free Writing Prospectus dated August&nbsp;8, 2019 </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right">Relating to Preliminary Prospectus Supplement dated August&nbsp;8, 2019 </P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="right">Registration <FONT STYLE="white-space:nowrap">No.&nbsp;333-223097</FONT> </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>MAGELLAN MIDSTREAM PARTNERS, L.P. </B></P>
<P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center"><B>$500,000,000 3.950% SENIOR NOTES DUE 2050 </B></P> <P STYLE="font-size:12pt;margin-top:0pt;margin-bottom:0pt">&nbsp;</P>
<TABLE CELLSPACING="0" CELLPADDING="0" WIDTH="100%" BORDER="0" STYLE="BORDER-COLLAPSE:COLLAPSE; font-family:Times New Roman; font-size:10pt" ALIGN="center">


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<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Issuer:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Magellan Midstream Partners, L.P.</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Expected Ratings (Moody&#146;s/S&amp;P)*:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Baa1 / BBB+</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Note Type:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">Senior Unsecured Notes</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Title of Securities:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">3.950% Senior Notes due 2050</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Pricing Date:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">August&nbsp;8, 2019</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Settlement Date (T+7)**:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">August&nbsp;19, 2019</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Interest Payment Dates:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">March&nbsp;1 and September&nbsp;1, commencing March&nbsp;1, 2020</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Maturity Date:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">March&nbsp;1, 2050</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Principal Amount:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">$500,000,000</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Benchmark Treasury:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">3.000% due February&nbsp;15, 2049</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Benchmark Treasury Price/Yield:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top"><FONT STYLE="white-space:nowrap">116-15</FONT> / 2.235%</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Spread to Benchmark Treasury:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">+172 basis points</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Yield to Maturity:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">3.955%</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Coupon:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">3.950%</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Public Offering Price:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="top">99.910% of the principal amount</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"> <P STYLE=" margin-top:0pt ; margin-bottom:0pt; margin-left:1.00em; text-indent:-1.00em; font-size:10pt; font-family:Times New Roman">Optional Redemption Provisions:</P></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Make-Whole Call:</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">Prior to September&nbsp;1, 2049, at a price equal to the greater of (1) 100% of the principal amount of the notes to be redeemed and (2)&nbsp;the sum of the present values of the remaining scheduled payments of principal and
interest on the notes to be redeemed that would be due if the notes matured on September&nbsp;1, 2049, but for the redemption, (exclusive of interest accrued to the date of redemption) discounted to the date of redemption on a semi-annual basis
(assuming a <FONT STYLE="white-space:nowrap">360-day</FONT> year consisting of twelve <FONT STYLE="white-space:nowrap">30-day</FONT> months) at the Treasury Rate plus 30 basis points; plus, in either case, accrued and unpaid interest, if any, to the
date of redemption.</TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top">Par Call:</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">On or after September&nbsp;1, 2049, we will pay an amount equal to 100% of the principal amount of the notes to be redeemed plus accrued and unpaid interest, if any, on the notes redeemed to the redemption
date.</TD></TR></TABLE>
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<TD VALIGN="top">CUSIP / ISIN:</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom">559080AP1 / US559080AP17</TD></TR>
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<TD VALIGN="top">Joint Book-Running Managers:</TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Barclays Capital Inc.</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">PNC Capital Markets
LLC</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">SunTrust Robinson Humphrey, Inc.</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">TD Securities (USA)
LLC</P> <P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman">Wells Fargo Securities, LLC</P></TD></TR>
<TR STYLE="font-size:1pt">
<TD HEIGHT="5"></TD>
<TD HEIGHT="5" COLSPAN="2"></TD></TR>
<TR STYLE="page-break-inside:avoid ; font-family:Times New Roman; font-size:10pt">
<TD VALIGN="top"><FONT STYLE="white-space:nowrap">Co-Managers:</FONT></TD>
<TD VALIGN="bottom">&nbsp;&nbsp;</TD>
<TD VALIGN="bottom"> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">J.P. Morgan Securities LLC</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">Mizuho Securities
USA LLC</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">RBC Capital Markets, LLC</P> <P STYLE="margin-top:0pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">SMBC Nikko Securities
America, Inc.</P> <P STYLE="margin-top:0pt; margin-bottom:1pt; font-size:10pt; font-family:Times New Roman">U.S. Bancorp Investments, Inc.</P></TD></TR>
</TABLE> <P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman" ALIGN="center">************************ </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">*Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">**It is expected that delivery of the notes will be made to investors on or about August&nbsp;19, 2019, which will be the seventh business day following the
date hereof (such settlement being referred to as &#147;T+7&#148;). Under Rule <FONT STYLE="white-space:nowrap">15c6-1</FONT> under the Securities and Exchange Act of 1934, as amended, trades in the secondary market generally are required to settle
in two business days, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade the notes on any date prior to the second business day prior to delivery of the notes hereunder may be required, by
virtue of the fact that the notes initially settle in T+7, to specify an alternate settlement cycle at the time of any such trade to prevent a failed settlement and such purchasers should consult their own advisors. </P>
<P STYLE="margin-top:12pt; margin-bottom:0pt; font-size:10pt; font-family:Times New Roman">The issuer has filed a registration statement (including a preliminary prospectus supplement and a prospectus) with the U.S. Securities and Exchange
Commission (the &#147;SEC&#148;) for the offering to which this communication relates. Before you invest, you should read the preliminary prospectus supplement, the issuer&#146;s prospectus in that registration statement and any other documents the
issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC web site at http://www.sec.gov. Alternatively, the issuer, any underwriter or any
dealer participating in the offering will arrange to send you the prospectus supplement and prospectus if you request it by calling Barclays Capital Inc. at <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap"><FONT
STYLE="white-space:nowrap">1-888-603-5847,</FONT></FONT></FONT> PNC Capital Markets LLC at <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">1-855-881-0697,</FONT></FONT></FONT> SunTrust Robinson
Humphrey, Inc. at <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">1-800-685-4786,</FONT></FONT></FONT> TD Securities (USA) LLC at <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap"><FONT
STYLE="white-space:nowrap">1-855-495-9846</FONT></FONT></FONT> or Wells Fargo Securities, LLC at <FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap"><FONT STYLE="white-space:nowrap">1-800-645-3751.</FONT></FONT></FONT> </P>
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