What is the title of Lost's first episode?

The title of Lost's first episode is “Pilot.” It is a two-part television pilot that introduces the survivors of Oceanic Flight 815 after their crash on a mysterious island.

“Pilot (Part 1)” premiered on September 22, 2004, and “Pilot (Part 2)” followed on September 29. Together, the two parts run about 83 minutes and are commonly treated as the opening episode of the series. The story establishes Jack Shephard, Kate Austen, Charlie Pace, Sawyer, Sayid, and other central characters.

The episode was directed by J. J. Abrams, who co-wrote it with Damon Lindelof. Jeffrey Lieber, whose earlier draft helped begin the project, received a story credit. The pilot was filmed largely on Oahu, Hawaii, and was exceptionally expensive for network television because the production used a decommissioned Lockheed L-1011 to depict the crash wreckage.

“Tabula Rasa” is the next episode, while “Walkabout” and “Exodus” occur later in season one. The word “pilot” can also mean a test episode, but here it is the official title.