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:     811-22972

 NAME OF REGISTRANT:                     AMG Pantheon Master Fund,
                                         LLC



 ADDRESS OF PRINCIPAL EXECUTIVE OFFICES: 680 Washington Blvd
                                         Stamford, CT 06901

 NAME AND ADDRESS OF AGENT FOR SERVICE:  Ropes & Gray LLP
                                         Prudential Tower
                                         800 Boylston Street
                                         Boston, MA 02199

 REGISTRANT'S TELEPHONE NUMBER:          203-299-3538

 DATE OF FISCAL YEAR END:                03/31

 DATE OF REPORTING PERIOD:               07/01/2021 - 06/30/2022





                                                                                                  

AMG Pantheon Master Fund, LLC
--------------------------------------------------------------------------------------------------------------------------
 The fund held no voting securities during the reporting period and did not vote any securities or have
 any securities that were subject to a vote during the reporting period.






SIGNATURES

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.

(Registrant)         AMG Pantheon Master Fund, LLC
By (Signature)       /s/ Keitha L. Kinne
Name                 Keitha L. Kinne
Title                President
Date                 08/31/2022