Dead or Alive Ultimate (Japanese: デッドオアアライブアルティメット, Hepburn: Deddo oa Araibu Arutimetto, abbreviated as DOAU) is a compilation of fighting games developed by Team Ninja and released by Tecmo for the Xbox in 2004.

Ultimate received generally favorable reviews from critics who praised the games' online functionalities.

The remade version of Dead or Alive 2 has re-developed graphics and new stages for the Xbox gaming system.

Dead or Alive 1 Ultimate is essentially identical to its original Sega Saturn version, and is generally considered more of a collector's disc than for its content.

While this game brings back the old mechanics of the Dreamcast version of Dead or Alive 2, some changes to the music and remixes were added.

[6] In the United States, two trading cards with character pictures on them were randomly included in each game as part of a collector's edition.

The game disc of the North American release also contains the Booster Pack for the North American version of Dead or Alive 3, which adds numerous character costumes found in the European and Japanese versions of Dead or Alive 3.

Golden concluded that "the greatly improved arenas, the plethora of costumes, the addition of slope moves, and the implementation of Xbox Live play makes DOA Ultimate one of the best games this year".

Kasavin criticized the gameplay being unchanged from years-old predecessors and the absence of Dead or Alive 3 characters "Hayate", "Christie", and "Brad Wong" from the roster, but concluded that "For a game that's so bold as to call itself "Ultimate", DOAU sure comes close.

[16] Dead or Alive Ultimate topped the Japanese charts on release, coming in number 4 during Week 45 in 2004.

[25][26] It also received a runner-up position in GameSpot's 2004 "Best Fighting Game" category across all platforms, losing to Mortal Kombat: Deception.

Dead or Alive Ultimate's online mode along with the online modes of Mortal Kombat: Deception and the Xbox version of Street Fighter Anniversary Collection, connected players of different regions together during the time the fighting game community (FGC) was in a state of stagnation.