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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 GUhVFjfIt33fUAMGK3AgQF0EbsHJUnu/sdIXECUjVhz2MJG2pFGzNJbJy6UghRbt
 JJi/9iq+LR/xy4OngsxkvA==

<SEC-DOCUMENT>9999999995-06-000017.txt : 20060523
<SEC-HEADER>9999999995-06-000017.hdr.sgml : 20060523
<ACCEPTANCE-DATETIME>20060523001512
ACCESSION NUMBER:		9999999995-06-000017
CONFORMED SUBMISSION TYPE:	EFFECT
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20060522
DATE AS OF CHANGE:		20060523
EFFECTIVENESS DATE:		20060522

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			AON CORP
		CENTRAL INDEX KEY:			0000315293
		STANDARD INDUSTRIAL CLASSIFICATION:	ACCIDENT & HEALTH INSURANCE [6321]
		IRS NUMBER:				363051915
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		EFFECT
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-102799
		FILM NUMBER:		06860012

	BUSINESS ADDRESS:	
		STREET 1:		200 EAST RANDOLPH STREET
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601
		BUSINESS PHONE:		3123811000

	MAIL ADDRESS:	
		STREET 1:		200 EAST RANDOLPH STREET
		CITY:			CHICAGO
		STATE:			IL
		ZIP:			60601

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMBINED INTERNATIONAL CORP
		DATE OF NAME CHANGE:	19870504
</SEC-HEADER>
<DOCUMENT>
<TYPE>EFFECT
<SEQUENCE>1
<FILENAME>primary_doc.xml
<TEXT>
<XML>
<?xml version="1.0"?>
<edgarSubmission>

    <schemaVersion>X0101</schemaVersion>

    <submissionType>EFFECT</submissionType>

    <act>33</act>

    <testOrLive>LIVE</testOrLive>

    <effectiveData>
        <finalEffectivenessDispDate>2006-05-22</finalEffectivenessDispDate>
        <accessionNumber>0001047469-06-007408</accessionNumber>
        <submissionType>POS AM</submissionType>
        <filer>
            <cik>0000315293</cik>
            <entityName>AON CORP</entityName>
            <fileNumber>333-102799</fileNumber>
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</XML>
</TEXT>
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