National Lampoon Encyclopedia of Humor is an American humor book that was first published in 1973 in hardback. It was a "special issue" of National Lampoon magazine, so it was sold on newsstands; however, it was put out in addition to the regular issues of the magazine.
The book contained all new material. It consisted of an alphabetically arranged collection of humor pieces, cartoons, and comic strips that had been especially created by many of the National Lampoon's regular contributors.