<SEC-DOCUMENT>0001209191-23-012021.txt : 20230222
<SEC-HEADER>0001209191-23-012021.hdr.sgml : 20230222
<ACCEPTANCE-DATETIME>20230222212549
ACCESSION NUMBER:		0001209191-23-012021
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20230217
FILED AS OF DATE:		20230222
DATE AS OF CHANGE:		20230222

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Davies Christa
		CENTRAL INDEX KEY:			0001419356

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07933
		FILM NUMBER:		23655696

	MAIL ADDRESS:	
		STREET 1:		AON CORPORATE LAW DEPT
		STREET 2:		200 EAST RANDOLPH ST, 8TH FL
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Aon plc
		CENTRAL INDEX KEY:			0000315293
		STANDARD INDUSTRIAL CLASSIFICATION:	INSURANCE AGENTS BROKERS & SERVICES [6411]
		IRS NUMBER:				981539969
		STATE OF INCORPORATION:			L2
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		METROPOLITAN BUILDING
		STREET 2:		JAMES JOYCE STREET
		CITY:			DUBLIN 1
		STATE:			L2
		ZIP:			D01 K0Y8
		BUSINESS PHONE:		35312666000

	MAIL ADDRESS:	
		STREET 1:		METROPOLITAN BUILDING
		STREET 2:		JAMES JOYCE STREET
		CITY:			DUBLIN 1
		STATE:			L2
		ZIP:			D01 K0Y8

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AON CORP
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMBINED INTERNATIONAL CORP
		DATE OF NAME CHANGE:	19870504
</SEC-HEADER>
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<SEQUENCE>1
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            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
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            <rptOwnerStateDescription></rptOwnerStateDescription>
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            <isTenPercentOwner>0</isTenPercentOwner>
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            <officerTitle>Chief Financial Officer</officerTitle>
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                <transactionPricePerShare>
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                <transactionPricePerShare>
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                <value></value>
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                    <value>3797</value>
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                <transactionPricePerShare>
                    <value>306.11</value>
                    <footnoteId id="F1"/>
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                <value></value>
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            <transactionAmounts>
                <transactionShares>
                    <value>1523</value>
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                <transactionPricePerShare>
                    <value>306.87</value>
                    <footnoteId id="F1"/>
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            <securityTitle>
                <value>Restricted Share Unit (Right to Receive)</value>
            </securityTitle>
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            <transactionDate>
                <value>2023-02-17</value>
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            <deemedExecutionDate></deemedExecutionDate>
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                <transactionCode>M</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>871</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F12"/>
            </exerciseDate>
            <expirationDate>
                <value>2025-02-17</value>
                <footnoteId id="F12"/>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A Ordinary Shares</value>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>871</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
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                <sharesOwnedFollowingTransaction>
                    <value>1744</value>
                </sharesOwnedFollowingTransaction>
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            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The transactions reported were effected pursuant to a trading plan meeting the requirements of SEC Rule 10b5-1 entered into on November 23, 2022.</footnote>
        <footnote id="F2">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $308.725 to $309.72, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F3">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $309.75 to $310.745, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F4">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $310.76 to $310.79, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F5">Class A Ordinary Shares acquired upon the vesting of a restricted share unit award.</footnote>
        <footnote id="F6">Class A Ordinary Shares withheld by the issuer for payment of taxes in connection with the vesting of the award.</footnote>
        <footnote id="F7">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $303.59 to $304.58, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F8">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $304.60 to $305.46, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F9">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $305.63 to $306.62, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F10">The price reported is a weighted average price.  Shares were sold in a series of transactions within the same trading day at prices ranging from $306.65 to $307.40, inclusive.  Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
        <footnote id="F11">The restricted share unit award converts to Class A Ordinary Shares on a 1-for-1 basis.  In accordance with Irish law, the reporting person agreed to pay the issuer the nominal value of US$0.01 per share issued to the reporting person.</footnote>
        <footnote id="F12">A restricted share unit award was granted on February 17, 2022 and vests in accordance with the terms of the Aon plc 2011 Incentive Compensation Plan: 33 1/3% of the award vests on each of the first through third anniversary of the date of grant.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Julie Cho - Julie Cho pursuant to a power of attorney from Christa Davies</signatureName>
        <signatureDate>2023-02-22</signatureDate>
    </ownerSignature>
</ownershipDocument>
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</SEC-DOCUMENT>
