Gahan Allen Wilson[1] (February 18, 1930 – November 21, 2019) was an American author, cartoonist and illustrator known for his cartoons depicting horror-fantasy situations.

Wilson was born in Evanston, Illinois, and was inspired by the work of the satiric Mad and Punch cartoonists, and 1950s science fiction films.

From 1992 through end of publication, he prepared all the front covers for the annual book Passport to World Band Radio.

Wilson wrote and illustrated a short story for Harlan Ellison's anthology Again, Dangerous Visions (1972).

He also contributed short stories to other publications; including "M1" and "The Zombie Butler" both of which appeared in The Magazine of Fantasy & Science Fiction and were reprinted in Gahan Wilson's Cracked Cosmos (1975).