Tom DeFalco (b June 26, 1950) is an American comics writer and editor. It was in the latter capacity that DeFalco worked with Hasbro in heading the creative team that produced the basis for the back story for the A Real American Hero toyline. He served as editor of the first six issues of G.I. Joe: A Real American Hero for Marvel Comics. He also edited the first G.I. Joe Yearbook. Later DeFalco became editor-in-chief of Marvel from 1987 until 1994, with his first such credit on G.I. Joe being issue #66, and on G.I. Joe: Special Missions being issue #8, and he remained in this role for the remainder of both comics' lifetimes.
DeFalco's other work includes writing runs on the various Spider-Man titles, The Mighty Thor, Fantastic Four, Spider-Girl, various Archie Comics and other titles, as well as editing stints on series such as the Archie books, Secret Wars, the Spider-Man titles, Star Wars and other series.