The Hobbit: An Unexpected Journey is a 2012 epic high fantasy adventure film directed by Peter Jackson from a screenplay by Fran Walsh, Philippa Boyens, Jackson, and Guillermo del Toro, based on the 1937 novel The Hobbit by J. R. R. Tolkien. It is the first installment in The Hobbit trilogy, acting as a prequel to Jackson's The Lord of the Rings trilogy.

The story is set in Middle-earth sixty years before the main events of The Lord of the Rings and portions of the film are adapted from the appendices to Tolkien's The Return of the King. An Unexpected Journey tells the tale of Bilbo Baggins (Martin Freeman), who is convinced by the wizard Gandalf (Ian McKellen) to accompany thirteen Dwarves, led by Thorin Oakenshield (Richard Armitage), on a quest to reclaim the Lonely Mountain from the dragon Smaug. The ensemble cast also includes Ken Stott, Cate Blanchett, Ian Holm, Christopher Lee, Hugo Weaving, James Nesbitt, Elijah Wood, and Andy Serkis, and features Sylvester McCoy, Barry Humphries, and Manu Bennett.