Clifford is the title character and protagonist of Clifford the Big Red Dog by Norman Bridwell, originally published in 1963. Clifford is also the star of the television series of the same name: Clifford the Big Red Dog, based on the book series, which ran on PBS Kids during the early 2000s and its reboot in 2019. He is the official mascot of Scholastic Corporation.

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.