Scooby-Doo! & Martin Mystery: Carnival Cruise Mayhem


 * This article is about the film. For the DVD, see (DVD).

 is a 2021 Canadian-American animated direct-to-video spy action comedy film and the twenty-eighth in a series of direct-to-video films based upon Hanna-Barbera's Scooby-Doo Saturday morning cartoons, and also based on the cartoon series, Martin Mystery. It was released on DVD and Digital HD on February 14, 2021.

Characters
Main characters: Other characters:
 * Mystery Inc.
 * Scooby-Doo
 * Shaggy Rogers
 * Fred Jones
 * Daphne Blake
 * Velma Dinkley
 * The Center Agents
 * Martin Mystery
 * Diana Lombard
 * Java the Caveman

Villains: