Jack Horner

Jack Horner may refer to:

• Jack Horner (paleontologist)
• John Henry (Jack) Horner, former member of the Canadian House of Commons.
• Little Jack Horner is also the name of the protagonist of a nursery rhyme. He discovers a plum in his Christmas pie.
• Jack Horner (journalist) was a Minnesota sportscaster
• Jack Horner is also the name of the pornographic film producer character played by Burt Reynolds in the movie Boogie Nights. He discovers Dirk Diggler.