Tekken Tag Tournament (鉄拳タッグトーナメント Tekken Taggu Tōnamento?, lit. Iron Fist Tag Tournament) is an update of Tekken 3 and is the fourth installment in the Tekken fighting game series. It is not canonical to the Tekken storyline however. The game was originally available as an update kit for Tekken 3.

Tekken Tag Tournament was first released in arcades and was later ported to the PlayStation 2. The arcade version operated similarly, but ran on a 32-bit graphics engine like Tekken 3. It received upgraded graphics when it was ported to the home system. Tekken Tag Tournament is one of the two games in the series to be released in an alternate cover.