<SEC-DOCUMENT>0000950123-04-007813-index.html : 20040625
<SEC-HEADER>0000950123-04-007813.hdr.sgml : 20040625
<ACCEPTANCE-DATETIME>20040625172209
ACCESSION NUMBER:		0000950123-04-007813
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20031231
FILED AS OF DATE:		20040625

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:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-03305
		FILM NUMBER:		04882819

	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>11-K
<SEQUENCE>1
<FILENAME>y98381ae11vk.txt
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: y98381ae11vk.txt

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23
<SEQUENCE>2
<FILENAME>y98381aexv23.txt
<DESCRIPTION>CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNT
<TEXT>
Document 2 - file: y98381aexv23.txt

</DOCUMENT>
</SEC-DOCUMENT>