Christopher St. John (sometimes credited at Chris St. John) is an African-American film and television actor. He is also a film producer, film director and screenwriter. He also played a minor role in the television series Remington Steele.

Christabel Gertrude Marshall (aka Christopher Marie St John) (24 October 1871 – 20 October 1960) was a British campaigner for women's suffrage, a playwright and author. Marshall lived in a ménage à trois with the artist Clare Atwood and the actress, theatre director, producer and costume designer Edith Craig from 1916 until Craig's death in 1947.