City of Ember is a 2008 American science fantasy adventure film based on the 2003 novel The City of Ember by Jeanne DuPrau. Directed by Gil Kenan in his live-action directorial debut, the film stars Saoirse Ronan, Harry Treadaway, Bill Murray, Mackenzie Crook, Martin Landau, Mary Kay Place, Toby Jones, and Tim Robbins.

Produced by Tom Hanks and Gary Goetzman's Playtone and Walden Media, City of Ember was theatrically released on October 10, 2008, by 20th Century Fox under the "Fox-Walden" joint-venture, two months after the release of the final book in the series, The Diamond of Darkhold. The film received mixed reviews from critics and was a box-office bomb, grossing just $17.9 million against a budget of $55 million.