Grand Theft Auto: The Ballad of Gay Tony (official abbreviation TBoGT) is the second episode of two downloadable add-ons for Grand Theft Auto IV for the Xbox 360. It was released on October 29, 2009. The Playstation 3 and PC versions were later released on April 13, 2010 in North America and on April 16, 2010 in Europe.

The protagonist is Luis Fernando Lopez, a part-time hoodlum and full-time assistant to legendary nightclub impresario Anthony "Gay Tony" Prince. The storyline interweaves with the original game and first episode, most notably the Museum Piece mission that involves all three protagonists. As well as a new storyline, missions, and characters, it also features new game mechanics, vehicles, weapons, side missions, collectibles and achievements. As with TLAD, new radio and in-game television programming is included.

Rockstar says, "Players will struggle with the competing loyalties of family, ninjas, and friends, and with the uncertainty about who is real and who is fake in a world in which everyone has a price." According to Rockstar's official website, "The Ballad of Gay Tony injects Liberty City with an overdose of guns, glitz, and grime." Sam Houser, the founder of Rockstar Games, said before its release "This episode's focus on high-end night life contrasts with the biker gangs portrayed in The Lost and Damned, whilst giving us a lot of new gameplay possibilities."

On the XBOX LIVE Marketplace it costs 1600 Microsoft points, and on the PlayStation Network it costs $19.99 (USD).

At first, The Ballad Of Gay Tony, along with the first piece of downloadable content, The Lost and Damned was going to be released to the PS3 and PC on March 30th, but due to Sony Computer Entertainment wanting to edit some of the radio stations, it was released on the later date of April 13th in North America and April 16th in Europe.

The stories for Grand Theft Auto IV, The Lost and Damned, and The Ballad of Gay Tony were written by Dan Houser and Rupert Humphries. All 3 stories happen at the same time, intertwining with each other,

thumb|404px|right|GTA IV: The Ballad of Gay Tony Debut Trailer