Donald Knight (16 February 1933 – 18 August 1997) was an English-born film, television, and stage actor.

He worked largely in the United States, and often played tough guys.

[2] In 1965, he moved to California to pursue acting, and was primarily a character actor, making numerous guest appearances in television series such as Combat!, The Time Tunnel, Bewitched, Hogan's Heroes, The Big Valley, Hawaii Five-O, It Takes a Thief, Bonanza, Mannix, Mission: Impossible, Columbo, Banacek, Night Gallery, Cannon, Kojak, Little House on the Prairie, and Barnaby Jones, as well as semi-regular roles in series such as The Immortal.

He was a minister at the United Church of Christ in Simi Valley, California.

[5] Knight died on 18 August 1997 in Squaw Valley, Fresno County, California, USA, following a stroke earlier that month.