Stephen MacKenna (born 2nd January 1944 in Wortley, South Yorkshire) appeared in Emmerdale in four different roles:
- John Harver between September and November 2003.
- Morgan Albright in October 2006.
- Mr. Bridges in November 2009.
- Bill Strikes in August 2012.
Other television roles include Coronation Street, EastEnders, Hollyoaks, Doctor Who, Heartbeat, Doctors, The Bill, Gentleman Jack, Cracker, The Professionals, Robin of Sherwood, Bergerac, Boon and The Royal Today. He also appeared as John Lennon in the 1979 film Birth of the Beatles, directed by Richard Marquand, and also appeared in 1981's Eye of the Needle, also directed by Marquand.