Marian Constance Blackton (January 18, 1901 – December 12, 1993) was an American screenwriter and actress active primarily in the 1920s.

Marian was the daughter of film producer J. Stuart Blackton and his wife, Isabelle Mabel MacArthur.

She grew up on film sets, thanks to her father's career, and knew early on that she wanted to get into the industry for herself.

[1] She got her start as a script girl for her father's films at Vitagraph, before establishing a name for herself via her adapted screenplays.

[6] Marian Blackton Trimble wrote a personal biography of her father that was edited by film historian Anthony Slide.