<SEC-DOCUMENT>0001193125-21-101431-index.html : 20210331
<SEC-HEADER>0001193125-21-101431.hdr.sgml : 20210331
<ACCEPTANCE-DATETIME>20210331081059
ACCESSION NUMBER:		0001193125-21-101431
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20210331
DATE AS OF CHANGE:		20210331

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MARSH & MCLENNAN COMPANIES, INC.
		CENTRAL INDEX KEY:			0000062709
		STANDARD INDUSTRIAL CLASSIFICATION:	INSURANCE AGENTS BROKERS & SERVICES [6411]
		IRS NUMBER:				362668272
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-05998
		FILM NUMBER:		21789904

	BUSINESS ADDRESS:	
		STREET 1:		1166 AVENUE OF THE AMERICAS
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036
		BUSINESS PHONE:		2123455000

	MAIL ADDRESS:	
		STREET 1:		1166 AVENUE OF THE AMERICAS
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10036

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MARSH & MCLENNAN COMPANIES INC
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MARLENNAN CORP
		DATE OF NAME CHANGE:	19760505
</SEC-HEADER>
<DOCUMENT>
<TYPE>DEFA14A
<SEQUENCE>1
<FILENAME>d81851ddefa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: d81851ddefa14a.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g81851dsp03.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g81851dsp03.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g81851dsp04.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g81851dsp04.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g81851dsp05.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g81851dsp05.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g81851dsp06.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g81851dsp06.jpg

</DOCUMENT>
</SEC-DOCUMENT>