Michael Kilgarriff is a British actor from Brighton. As an actor he is well known for two things: his rich voice--leading to much radio and voice over work--and his height. At six feet seven inches (2.01 metres) tall, he is sought for certain roles, the most notable of which has been The Cyber Controller in Doctor Who, a role he played in 1967 and 1985. He also appeared in the series as an Ogron (1973) and as the eponymous K1 Robot in the story Robot in 1974. He returned to play the K1 Robot in the Big Finish Productions Bernice Summerfield audio adventure The Relics of Jegg-Sau. He also did voice work for the Jim Henson movie The Dark Crystal in 1982 as SkekUng, the Garthim master (Named "The General" in the movie), and played the part of the Green King in the 1970s serial The Moon Stallion.

Kilgarriff is a music hall enthusiast, and wrote what is considered the definitive guide to music hall songs: Sing Us One of the Old Songs: A Guide to Popular Song from 1860-1920 (Oxford University Press, 1998). This work lists thousands of influential songs by singer, lyricist and composer.

He is also the author of a series of children's joke books.