Teenage Mutant Ninja Turtles is a 2014 American superhero film based on the characters of the same name created by Peter Laird and Kevin Eastman. A reboot of the Teenage Mutant Ninja Turtles film series, it was directed by Jonathan Liebesman and written by Josh Appelbaum, André Nemec, and Evan Daugherty. The film stars Megan Fox, Will Arnett, William Fichtner, Danny Woodburn, Abby Elliott, Noel Fisher, Jeremy Howard, Pete Ploszek, and Alan Ritchson, with the voices of Johnny Knoxville and Tony Shalhoub. The plot follows the Turtles, who, with the help of their new ally April O'Neil, face the evil Shredder and his Foot Clan, as well as protect their New York City home.

The film was announced shortly before Turtles co-creator Peter Laird sold the rights to the characters to Nickelodeon in October 2009. In late May 2010, Paramount Pictures and Nickelodeon Movies brought Michael Bay and his Platinum Dunes partners Andrew Form and Brad Fuller on to produce the film. Liebesman began negotiations to direct in 2012. The screenplay went through numerous rewrites, with Applebaum, Nemec, and Daugherty ultimately getting final credit. Principal photography began in March 2013, in Tupper Lake, New York, and production concluded in August 2013.

Teenage Mutant Ninja Turtles premiered on July 29, 2014 in Mexico City, and was released in theaters on August 8, 2014. The film received generally negative reviews from critics, with criticism aimed at its screenplay and characterisations, while its performances, action sequences, and visual effects were praised. Despite this, it became a box office success, grossing $485 million against a $125–150 million budget, becoming the highest-grossing film in the franchise, as well as the highest-grossing film from Nickelodeon Movies. A sequel, Out of the Shadows, followed in 2016 to slightly better reviews but failed to match the first film's box-office gross.