Denis L. Stewart is an American film producer and production manager whose career has spanned major Hollywood productions for more than four decades. He began as an assistant director before becoming a unit production manager on high-profile films including Spider-Man 2, Spider-Man 3, Indiana Jones and the Kingdom of the Crystal Skull, Iron Man 2, and Cowboys & Aliens. Stewart later received executive producer credits on films such as Iron Man 2, Hansel & Gretel: Witch Hunters, Teenage Mutant Ninja Turtles, Dungeons & Dragons: Honor Among Thieves, and Jurassic World Rebirth. His work has established him as an experienced production executive on large-scale studio productions.