Clifford the Big Red Dog is a 2021 live-action animated fantasy comedy film directed by Walt Becker from a screenplay by Blaise Hemingway and the writing team of Jay Scherick and David Ronn, and a story by Justin Malen and Ellen Rapoport, based on the children's book series of the same name by Norman Bridwell. The film stars Jack Whitehall, Darby Camp, Tony Hale, Sienna Guillory, David Alan Grier, Russell Wong, Izaac Wang, Kenan Thompson and John Cleese.

Clifford the Big Red Dog is an American children's book series about the adventures of a girl named Emily Elizabeth and her titular pet: a giant, red-furred dog named Clifford. It was first published in 1963 and was written by Norman Bridwell. Clifford is Scholastic's official mascot.