Up is a 2009 American computer animated comedy-drama[ adventure film produced by Pixar Animation Studios and distributed by Walt Disney Pictures. The film centers on an elderly widower named Carl Fredricksen (Ed Asner) and an earnest boy named Russell (Jordan Nagai); by tying thousands of balloons to his house, Carl sets out to fulfill his dream to see the wilds of South America and complete a promise made to his late wife, Ellie. The film was directed by Pete Docter and co-directed by Bob Peterson, who also wrote the film's screenplay with Docter, as well as the story with Tom McCarthy. The music was composed by Michael Giacchino, who also composed music for Pixar's The Incredibles and Ratatouille .

Docter began working on the story in 2004 called Heliums, which was based on fantasies of escaping from life when it becomes too irritating. He and eleven other Pixar artists spent three days in Venezuela gathering research and inspiration. The designs of the characters were caricatured and stylized considerably, and animators were challenged with creating realistic cloth. It was Pixar's first film to be presented in Disney Digital 3-D.

Up was released on May 29, 2009, and opened the 2009 Cannes Film Festival, becoming the first animated and 3-D film to do so. The film grossed over $735 million, becoming the sixth highest grossing film of 2009. The film received universal acclaim from critics and audiences, with many calling it one of the best animated films of all time. Asner's vocal performance and Michael Giacchino's score were praised, as was the montage of Carl and his wife Ellie growing old together. The film won two Academy Awards, including Best Animated Feature, and was nominated for three more, including Best Picture, making it the second animated film in history to receive such a nomination (and the first Pixar film to do so), following Beauty and the Beast (1991).