Peter Mark Richman (born April 16, 1927) is an American actor who has starred in films and on television, who was for many years credited as Mark Richman.

Born Marvin Jack Richman in Philadelphia, Pennsylvania, to Jewish parents, he is the son of Yetta Dora (née Peck) and Benjamin Richman, a painting and paper-hanger contractor.

Making his feature film debut in the 1956 film Friendly Persuasion, Richman was, by that time, already a regularly employed TV actor, as well as a member of New York's Actors Studio, a resource of which he would avail himself frequently until moving to Los Angeles in 1961. He is perhaps best known for his role as Nicholas "Nick" Cain in the 1961 films The Murder Men and The Crimebusters. He reprised his role as Nicholas Cain in the NBC television series Cain's Hundred. Richman's other TV roles were on the soap opera Santa Barbara as Channing Creighton 'C.C.' Capwell, Jr., (1984), Longstreet as Duke Paige, on the ABC soap opera Dynasty as Andrew Laird (1981-1984), and a recurring role on Three's Company (1978-1979) as Chrissy's father, Rev. Luther Snow. Guest star on Beverly Hills, 90210. His other films include Friday the 13th Part VIII: Jason Takes Manhattan (1989) and his most recent film Vic (2005).

His television credits include Justice, The Fall Guy, The DuPont Show with June Allyson, Stoney Burke, Breaking Point, The Fugitive, The Outer Limits, Blue Light, The Invaders, Alfred Hitchcock Presents, The Wild Wild West, Bonanza, Daniel Boone, The Silent Force, The Bionic Woman, Knight Rider, Three's Company and Matlock. He was often seen on Mission: Impossible and Combat!, as well as other shows of that era. He appeared as Ralph Offenhouse in Star Trek: The Next Generation's first season episode "The Neutral Zone". Richman starred in the last filmed episode of The Twilight Zone, called "The Fear". He voiced The Phantom in the animated series Defenders of the Earth.

Richman sits on the Board of Trustees of the Motion Picture and Television Fund.