Marty Isenberg (born 30 July 1963) is an American animation writer. He is best known for his role as co-story editor on Beast Machines and Transformers: Animated, and for his work on the 2003 Teenage Mutant Ninja Turtles series. He also wrote or co-wrote scripts for Ben 10, Danny Phantom, Gargoyles, Batman: The Animated Series, Action Man, Beetlejuice, The Mask, G.I. Joe: Renegades, X-Men: The Animated Series and Spider-Man: The Animated Series. From 1991-2003, he frequently collaborated with Robert N. Skir.