Gerald Harper (born 15 February 1929, London, England) is an actor, best known for his work on television, having played the title roles in Adam Adamant Lives! (1966–67) and Hadleigh (1969–76). He then returned to his main love, the theatre. His classical work includes playing on Broadway with the Old Vic company, playing Iago at the Bristol Old Vic and Benedick at the Chichester Festival Theatre.