Lost

Lost may refer to:

Locations

 * Atlantis, the Lost City of the Ancients

Planets

 * Vis Uban, a planet qualified as "City of the lost" by Jonas Quinn

Episodes

 * , the 15th episode of Stargate SG-1 Season 6
 * , the 21st episode of Stargate SG-1 Season 7
 * , the 22nd episode of Stargate SG-1 Season 7 and direct following of the previous one
 * , the 10th episode of Stargate Atlantis Season 2
 * , the 10th episode of Stargate Atlantis Season 5
 * , the 15th episode of Stargate Universe Season 1