Big Hero 6 is a 2014 American animated superhero film produced by Walt Disney Animation Studios and released by Walt Disney Pictures. Loosely based on the Marvel Comics superhero team of the same name created by Man of Action, the film was directed by Don Hall and Chris Williams and produced by Roy Conli, from a script by Jordan Roberts, Robert L. Baird and Daniel Gerson. It stars the voices of Ryan Potter, Scott Adsit, Daniel Henney, T.J. Miller, Jamie Chung, Damon Wayans Jr., Genesis Rodriguez, James Cromwell, Maya Rudolph, and Alan Tudyk. Big Hero 6 tells the story of Hiro Hamada, a young robotics prodigy, and Baymax, the healthcare-provider robot of Hiro's late brother Tadashi Hamada. They form a superhero team to combat a masked antagonist responsible for Tadashi's death.

Big Hero 6 is the first Disney animated film to feature Marvel Comics characters, whose parent company was acquired by the Walt Disney Company in 2009. Walt Disney Animation Studios created new software technology to produce the animated visuals.

Big Hero 6 debuted at the 27th Tokyo International Film Festival on October 23, 2014, and Abu Dhabi Film Festival on October 31, 2014, and was released in the United States on November 7. The film received positive reviews from critics with praise for its animation, pacing, action sequences, screenplay, entertainment value and emotional weight. It grossed over $657.8 million worldwide and became the highest-grossing animated film of 2014. Big Hero 6 received seven nominations for Annie Awards and won one, and also received a Golden Globe nomination. At the 87th Academy Awards, the film won Best Animated Feature.

A television series, which continues the story of the film, aired from 2017 to 2021 on Disney Channel and Disney XD. A two-season short series Baymax Dreams premiered in 2018, and another, Baymax!, was released on Disney+ in 2022.