Up is a 2009 American animated comedy-drama adventure film produced by Pixar Animation Studios and released by Walt Disney Pictures. The film was directed by Pete Docter, co-directed by Bob Peterson, and produced by Jonas Rivera. Docter and Peterson also wrote the film's screenplay and story, with Tom McCarthy co-writing the latter. The film stars the voices of Ed Asner, Christopher Plummer, Jordan Nagai, and Bob Peterson. The film centers on Carl Fredricksen (Asner), an elderly widower who travels to South America with wilderness explorer Russell (Nagai) in order to fulfill a promise that he made to his late wife Ellie. Along the way, they meet a talking dog named Dug (Peterson) and encounter a giant bird named Kevin, who is being hunted by the explorer Charles Muntz (Plummer), whom Carl had idolized in his childhood.

Pixar Animation Studios is an American animation studio based in Emeryville, California, known for its critically and commercially successful computer-animated feature films. Since 2006, Pixar has been a subsidiary of Walt Disney Studios, a division of Disney Entertainment, a segment of the Walt Disney Company.