A Bug's Life is a computer animated film produced by Pixar Animation Studios and released by Walt Disney Pictures and Buena Vista Distribution in the United States on November 14, 1998, and in the United Kingdom on 5 February 1999. It's also the second Disney/Pixar feature film. It tells the tale of an oddball individualist ant who hires what he thinks are "warrior bugs" (actually circus performers) to fight off greedy grasshoppers. The film was directed by John Lasseter. The story of A Bug's Life is a parody of Aesop's fable of The Ant and the Grasshopper. It is similar to the comedy ¡Three Amigos!, which is about out-of-work actors defending a town while thinking they're merely giving a performance. It also gives an obvious nod to Akira Kurosawa's Seven Samurai (as well as its Hollywood remake, The Magnificent Seven), which is about Japanese villagers hiring a rag-tag group of swordsmen to fight off rampaging bandits.

Reviews for A Bug's Life were overwhelmingly positive at the time of the film's release, and it has remained popular since, although it is worth noting that A Bug's Life and Cars are the only two films from Pixar not to place on IMDB's list of the top 250 films.

The DVD of the film is the first wholly-digital transfer of a feature film to a digital playback medium. No analog processes came between the creation of the computer images and their representation on the DVD.

As well, the pan and scan or 'full screen' version of the video (on the DVD as well as VHS releases) has been reframed and restaged; rather than sacrifice image in some parts of the film, the frame has been extended or objects moved to fit the narrower aspect ratio. Pixar continued this process on its later video releases. Also, the different characters (Flik, Dot, Francis, etc.) were on one (by themselves) cover of the video cover, considered a collectible in many cases.

A laserdisc version was also released in Japan by Pioneer, one of the last.