Big Hero 6 is a 2014 American animated superhero film produced by Walt Disney Animation Studios and released by Walt Disney Studios Motion Pictures, which is loosely based on the Marvel Comics superhero team of the same name created by Man of Action. It was directed by Don Hall and Chris Williams from a screenplay by Jordan Roberts, Robert L. Baird, and Daniel Gerson, and produced by Roy Conli. The film 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, his late brother Tadashi's healthcare-provider robot. They form a superhero team to combat a masked villain 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 film's animated visuals.Big Hero 6 debuted at the 27th Tokyo International Film Festival on October 23, 2014, and was released in the United States on November 7. The film received positive reviews from critics, who praised it for its animation, action sequences, pacing, entertainment value, heart, and emotional weight. It grossed over $657.8 million worldwide and became the highest-grossing animated film of 2014. Big Hero 6 received several awards and nominations: it received seven nominations for Annie Awards and won one, and also received a Golden Globe. 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. Another series, Baymax!, premiered on Disney+ on June 29, 2022.