Gavin Millar (11 January 1938 – 20 April 2022) was a Scottish film director, critic and television presenter. Millar was born in Clydebank, near Glasgow, the son of Tom Millar and his wife Rita (née Osborne). The family relocated to the Midlands when he was nine and he was educated at King Edward's School, Birmingham. He undertook national service in the Royal Air Force and then read English at Christ Church, Oxford from 1958 to 1961. Millar took a postgraduate film course at the Slade School of Fine Art in London.

Millar was a film critic for The Listener from 1970 to 1984. He also contributed to Sight and Sound and the London Review of Books. He wrote a new section to Karel Reisz's book The Technique of Film Editing for the 1968 edition. On television, he wrote, produced and presented Arena Cinema for the BBC from 1976 to 1980, and wrote and presented numerous other cinema and visual arts documentaries.