Professor X is a fictional character appearing in American comic books published by Marvel Comics. The character is depicted as the founder and sometimes leader of the X-Men. Created by writer Stan Lee and artist Jack Kirby, the character first appeared in The X-Men #1 (September 1963).

Xavier is a member of a subspecies of humans known as mutants, who are born with superhuman abilities. He is an exceptionally powerful telepath, who can read and control the minds of others. To both shelter and train mutants from around the world, he runs a private school in the X-Mansion in Salem Center, located in Westchester County, New York.