Sir William Frederick Payne Heseltine GCB GCVO AC QSO (born 17 July 1930) is a former Private Secretary to Queen Elizabeth II.

[1] He was educated at Richmond Primary School, Christ Church Grammar School, Claremont, Western Australia, and the University of Western Australia, where he received a 1st class BA (Hons) in history.

From 1962 to 1964 he was Assistant Federal Director of the Liberal Party of Australia, and in 1964 was attached to The Age (Melbourne).

He has been a company director from 1991, including chairman of NZI Insurance Australia Ltd 1992 (deputy 1991–1992); director of NZI Insurance New Zealand 1996; P&O Australia Ltd 1990–; and West Coast Telecasters Ltd 1991–1996.

On leaving Royal service, Sir William retired to the historic town of York in his native Western Australia.