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

                                FORM N-PX

            ANNUAL REPORT OF PROXY VOTING RECORD OF REGISTERED
                      MANAGEMENT INVESTMENT COMPANY


Investment Company Act File Number 811-07899

Name of Fund:  Merrill Lynch S&P 500 Index Fund, Merrill Lynch Small Cap Index
               Fund, Merrill Lynch Aggregate Bond Index Fund and Merrill Lynch
               International Index Fund of Merrill Lynch Index Funds, Inc.

Fund Address:  P.O. Box 9011
               Princeton, NJ  08543-9011

Name and address of agent for service:  Robert C. Doll, Jr., Chief Executive
         Officer, Merrill Lynch S&P 500 Index Fund, Merrill Lynch Small Cap
         Index Fund, Merrill Lynch Aggregate Bond Index Fund and Merrill Lynch
         International Index Fund of Merrill Lynch Index Funds, Inc., 800
         Scudders Mill Road, Plainsboro, NJ, 08536.  Mailing address:  P.O. Box
         9011, Princeton, NJ, 08543-9011

Registrant's telephone number, including area code:  (609) 282-2800

Date of fiscal year end: 12/31/2005

Date of reporting period: 07/01/2004 - 06/30/2005

Item 1 - Proxy Voting Record

         Item 1 - Proxy Voting Record - The Fund held no voting securities
         during the period covered by this report. No records are attached.
         For additional information on portfolio security voting, please
         refer to Quantitative Master Series Trust Form N-PX filed with the
         Securities & Exchange Commission.


Pursuant to the requirements of the Investment Company Act of 1940, the
registrant has duly caused this report to be signed on its behalf by the
undersigned, thereunto duly authorized.


Merrill Lynch S&P 500 Index Fund, Merrill Lynch Small Cap Index Fund, Merrill
Lynch Aggregate Bond Index Fund and Merrill Lynch International Index Fund of
Merrill Lynch Index Funds, Inc.


By:    /s/ Robert C. Doll, Jr.
       -----------------------
       Robert C. Doll, Jr.
       Chief Executive Officer
       Merrill Lynch S&P 500 Index Fund, Merrill Lynch Small Cap Index Fund,
       Merrill Lynch Aggregate Bond Index Fund and Merrill Lynch International
       Index Fund of Merrill Lynch Index Funds, Inc.


Date: November 28, 2005