UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

Form 13F

Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended:  March 31, 2005

Check here if Amendment [  ];  Amendment Number:    
     This Amendment  (Check only one.):	[] is a restatement.
					        	[    ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:	Marsh & McLennan Companies, Inc.	
Address:	1166 Avenue of the Americas	
	New York, New York  10036	
		

Form 13F File Number:    28 - 93

The institutional investment manager filing
 this report and the person by whom it is signed hereby 
represent that the person signing the report 
is authorized to submit it, that all information contained herein 
is true, correct and complete, and that it is understood
 that all required items, statements, schedules, lists, 
and tables, are considered integral parts of this form.  

Person Signing this Report on Behalf of Reporting Manager:

Name: 	Mark J. Dallara	
Title:	Vice President	
Phone: 	(212) 345-5512	

Signature, Place and Date of Signing:

_/s/  Mark J. Dallara___________              
     5/15/2005 
  [Signature]	                                            
  [City, State]	        [Date]

Report Type    (Check only one.):

[    ]	13F HOLDINGS REPORT.  (Check here 
if all holdings of this reporting manager are reported in 
this report.)

[ X ]	13F NOTICE.   (Check here if no holdings 
reported are in this report, and all holdings are 
reported by other reporting manager (s).)

[    ]	13F COMBINATION REPORT.  (Check 
here if a portion of the holdings for this reporting 
manager are reported in this report and a portion
 are reported by other reporting manager (s).)

List of Other Managers Reporting for this Manager:

	Form 13F File Number	Name

	28 - 90		Putnam Investment Management, LLC