Grand Theft Auto IV: The Lost and Damned is the first of two episodic expansion packs of the 2008 video game Grand Theft Auto IV, developed by Rockstar North and published by Rockstar Games. The game was released individually for the Xbox 360 on 17 February 2009, and as part of the disc-based package Grand Theft Auto: Episodes from Liberty City for PlayStation 3 and Windows on 13 April 2010. The package also includes the second Grand Theft Auto IV expansion, The Ballad of Gay Tony, and does not require the base game to be played. Microsoft added Episodes from Liberty City to its backwards compatibility list for Xbox One platforms in February 2017.

Grand Theft Auto IV is a 2008 action-adventure game developed by Rockstar North and published by Rockstar Games. It is the sixth main entry in the Grand Theft Auto series, following 2004's Grand Theft Auto: San Andreas, and the eleventh instalment overall. Set in the fictional Liberty City, based on New York City, the single-player story follows Eastern European war veteran Niko Bellic and his attempts to escape his past while under pressure from high-profile criminals. The open world design lets players freely roam Liberty City, consisting of three main islands, and the neighbouring state of Alderney, which is based on New Jersey.