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 811-21162

Name of Fund:  Merrill Lynch Core Principal Protected Fund of
               Merrill Lynch Principal Protected Trust

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 Core
       Principal Protected Fund of Merrill Lynch Principal Protected Trust ,
       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: 08/31/2006

Date of reporting period: 07/01/05 - 06/30/06

Item 1 - Proxy Voting Record - The Fund held no voting securities during the
                               period covered by this report.
                               No records are attached.


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 Core Principal Protected Fund of
Merrill Lynch Principal Protected Trust


By:     /s/ Robert C. Doll, Jr.
       -----------------------
       Robert C. Doll, Jr.
       Chief Executive Officer
       Merrill Lynch Core Principal Protected Fund of
       Merrill Lynch Principal Protected Trust


Date:  September 7, 2006