Andrew Keir was a Scottish actor, who rose to prominence in a number of films made by Hammer Film Productions in the 1960s. He was also active in television, and especially in the theatre, in a professional career that lasted from the 1940s to the 1990s. He is best remembered for starring as Professor Bernard Quatermass in Hammer's film version of Quatermass and the Pit. He also originated the role of Thomas Cromwell in Robert Bolt's play A Man for All Seasons.
His obituary in The Times described him as possessing "considerable range and undeniable distinction."