Andrew Keir (3 April 1926 – 5 October 1997) 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 (1967).