Dan Zimmerman (born April 8, 1974) is an American edtior. He is the editor of A Good Day to Die Hard.
Zimmerman did editing work in two of director John Moore's films, The Omen and Max Payne. He also edited AVPR: Aliens vs Predator - Requiem and Predators. Zimmerman also did some assistant editing work on The Nutty Professor, Lair Lair, Patch Adams, Galaxy Quest (which starred Alan Rickman), Dragonfly, Dr. Seuss' The Cat in the Hat and Flight of the Phoenix (also a John Moore film).