"There's No Place Like Home, Parts 1, 2 & 3"[A] is the season finale of the American Broadcasting Company's fourth season of the serial drama television series Lost, consisting of the 12th through 14th episodes. They are also the 84th through 86th episodes of the show overall. The three constituent episodes were split into two broadcasts; "Part 1" first aired on May 15, 2008, and "Part 2", serving as the two-hour season finale of the fourth season, first aired on May 29, 2008, on ABC in the United States and on CTV in Canada. The episodes were written by executive producers/show runners Carlton Cuse and Damon Lindelof; "Part 1" was directed by co-executive producer Stephen Williams, while executive producer Jack Bender directed "Part 2". The episode's title is a reference to The Wonderful Wizard of Oz.

The fourth season of the American serial drama television series Lost commenced airing on the ABC network in the United States, and on CTV in Canada on January 31, 2008, and concluded on May 29, 2008. The season continues the stories of a group of over 40 people who have been stranded on a remote island in the South Pacific, after their airplane crashed there more than 90 days prior to the beginning of the season. According to Lost's executive producers/writers/showrunners Damon Lindelof and Carlton Cuse, there are two main themes in the fourth season: "the castaways' relationship to the freighter folk" and "who gets off the island and the fact that they need to get back".