Christy Marx (b c.1952) is an American screenwriter best known for her work on various TV series, including Jem (which she created), Teenage Mutant Ninja Turtles, Conan the Adventurer, G.I. Joe, Hypernauts, Captain Power and others. She is also known for her original comic book series Sisterhood of Steel as well as work on Conan, Red Sonja, and Elfquest.