Teenage Mutant Ninja Turtles III is a 1993 American superhero film written and directed by Stuart Gillard. It is the sequel to Teenage Mutant Ninja Turtles II: The Secret of the Ooze (1991), and the final installment in the 1990–1993 Teenage Mutant Ninja Turtles series. It stars Elias Koteas, Paige Turco, Vivian Wu, Sab Shimono, and Stuart Wilson with the voices of Brian Tochi, Robbie Rist, Corey Feldman, and Tim Kelleher.

The creature effects were provided by the All Effects Company, rather than Jim Henson's Creature Shop, which acted as the provider for the previous films.

The film was released theatrically in the United States on March 19, 1993, by New Line Cinema. It received mostly negative reviews with a general consensus from the critics that the film did not feature any villains and stories from the original Mirage comics or the 1987 animated series. It received moderate box office success, grossing $54.4 million against a budget of $21 million, making it the lowest-rated entry in the series. An animated film TMNT was released in 2007 which makes reference to the prior live-action films. The film series was completely rebooted with 2014's Teenage Mutant Ninja Turtles, following the acquisition of the franchise by Viacom.