Tekken Tag Tournament is a 1999 fighting game developed and published by Namco for arcades. It is a spin-off the Tekken series. Not canon to the main storyline, Tekken Tag Tournament features nearly all the characters in the previous Tekken games and introduces a two-on-two 'tag team' battle mechanic. It was released as an arcade game, before becoming a North American and European launch title for the PlayStation 2 in 2000. The arcade version ran on the same Namco System 12 board with a 32-bit engine as Tekken 3, while the ported home console version received upgraded graphics.

A follow-up, Tekken Tag Tournament 2, was released in 2011. A remastered version of the game titled Tekken Tag Tournament HD was released for the PlayStation 3 in November 2011, as part of Tekken Hybrid.