<SEC-DOCUMENT>0000950123-05-008762-index.html : 20050721
<SEC-HEADER>0000950123-05-008762.hdr.sgml : 20050721
<ACCEPTANCE-DATETIME>20050721080938
ACCESSION NUMBER:		0000950123-05-008762
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20050721
ITEM INFORMATION:		Results of Operations and Financial Condition
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20050721
DATE AS OF CHANGE:		20050721

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			MERCK & CO INC
		CENTRAL INDEX KEY:			0000064978
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				221109110
		STATE OF INCORPORATION:			NJ
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03305
		FILM NUMBER:		05964982

	BUSINESS ADDRESS:	
		STREET 1:		ONE MERCK DR
		STREET 2:		P O BOX 100
		CITY:			WHITEHOUSE STATION
		STATE:			NJ
		ZIP:			08889-0100
		BUSINESS PHONE:		9084234044

	MAIL ADDRESS:	
		STREET 1:		ONE MERCK DR
		STREET 2:		PO BOX 100 WS3AB-05
		CITY:			WHITEHOUSE STATION
		STATE:			NJ
		ZIP:			08889-0100
</SEC-HEADER>
<DOCUMENT>
<TYPE>8-K
<SEQUENCE>1
<FILENAME>y10878e8vk.htm
<DESCRIPTION>MERCK & CO., INC.
<TEXT>
Document 1 - file: y10878e8vk.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>y10878exv99w1.txt
<DESCRIPTION>EX-99.1: PRESS RELEASE
<TEXT>
Document 2 - file: y10878exv99w1.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.2
<SEQUENCE>3
<FILENAME>y10878exv99w2.txt
<DESCRIPTION>EX-99.2: CERTAIN SUPPLEMENTAL INFORMATION
<TEXT>
Document 3 - file: y10878exv99w2.txt

</DOCUMENT>
</SEC-DOCUMENT>