Transdimensional Teenage Mutant Ninja Turtles was a supplement for the role-playing game Teenage Mutant Ninja Turtles & Other Strangeness which covered setting and rules information for both time travel and transdimensional travel.

Teenage Mutant Ninja Turtles & Other Strangeness is a role-playing game based on the comic book created by Kevin Eastman and Peter Laird. The core rulebook was first published by Palladium Books in September 1985 – before the Turtles franchise achieved mass popularity – and featured original comic strips and illustrations by Eastman and Laird. The rules and gameplay are based on Palladium's Megaversal system.