    <SEC-DOCUMENT>0001060955-21-000015-index.html : 20210616
    <SEC-HEADER>0001060955-21-000015.hdr.sgml : 20210616
    <ACCEPTANCE-DATETIME>20210616161611
    ACCESSION NUMBER:		0001060955-21-000015
    CONFORMED SUBMISSION TYPE:	6-K
    PUBLIC DOCUMENT COUNT:		12
    CONFORMED PERIOD OF REPORT:	20201231
    FILED AS OF DATE:		20210616
    DATE AS OF CHANGE:		20210616

    FILER:

    	COMPANY DATA:
    		COMPANY CONFORMED NAME:			ICON PLC
    		CENTRAL INDEX KEY:			0001060955
    		STANDARD INDUSTRIAL CLASSIFICATION:	SERVICES-COMMERCIAL PHYSICAL & BIOLOGICAL RESEARCH [8731]
    		IRS NUMBER:				981067160

    	FILING VALUES:
    		FORM TYPE:		6-K
    		SEC ACT:		1934 Act
    		SEC FILE NUMBER:	333-08704
    		FILM NUMBER:		211021694

    	BUSINESS ADDRESS:
    		STREET 1:		SOUTH COUNTY BUSINESS PARK
    		STREET 2:		LEOPARDSTOWN
    		CITY:			DUBLIN 18
    		STATE:			L2
    		ZIP:			00000
    		BUSINESS PHONE:		00 353 1 291 2000

    	MAIL ADDRESS:
    		STREET 1:		SOUTH COUNTY BUSINESS PARK
    		STREET 2:		LEOPARDSTOWN
    		CITY:			DUBLIN 18
    		STATE:			L2
    		ZIP:			00000

    	FORMER COMPANY:
    		FORMER CONFORMED NAME:	ICON PLC  /ADR/
    		DATE OF NAME CHANGE:	20010213
    </SEC-HEADER>
    <DOCUMENT>
    <TYPE>6-K
    <SEQUENCE>1
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    <DESCRIPTION>6-K
    <TEXT>
    Document 1 - file: a6kagmfiling2021.htm

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    <TYPE>EX-99.1
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    <DESCRIPTION>EX-99.1
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    Document 2 - file: icon2021agmproxyv5.htm

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    <SEQUENCE>3
    <FILENAME>iconplc_prxyxp59473xgt20.htm
    <DESCRIPTION>EX-99.2
    <TEXT>
    Document 3 - file: iconplc_prxyxp59473xgt20.htm

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    <TYPE>EX-99.3
    <SEQUENCE>4
    <FILENAME>ifrsfinancialstatements202.htm
    <DESCRIPTION>EX-99.3
    <TEXT>
    Document 4 - file: ifrsfinancialstatements202.htm

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    Document 5 - file: capture.jpg

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    Document 6 - file: culturevaluesslideexternal.jpg

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    <SEQUENCE>7
    <FILENAME>historyacquisitions2801202.jpg
    <TEXT>
    Document 7 - file: historyacquisitions2801202.jpg

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    <DOCUMENT>
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    <SEQUENCE>8
    <FILENAME>iconplc_prxyxp59473xgt20001.jpg
    <DESCRIPTION>GRAPHIC
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    Document 8 - file: iconplc_prxyxp59473xgt20001.jpg

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    Document 9 - file: iconplc_prxyxp59473xgt20002.jpg

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    <SEQUENCE>10
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    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 10 - file: image_0.jpg

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    <SEQUENCE>11
    <FILENAME>image_1.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 11 - file: image_1.jpg

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    <SEQUENCE>12
    <FILENAME>image_3.jpg
    <DESCRIPTION>GRAPHIC
    <TEXT>
    Document 12 - file: image_3.jpg

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    </SEC-DOCUMENT>