The 2004 NCAA Division I baseball tournament was held from June 4 through June 27, 2004. Sixty-four NCAA Division I college baseball teams met after having played their way through a regular season, and for some, a conference tournament, to play in the NCAA tournament. The tournament culminates with 8 teams in the College World Series at historic Rosenblatt Stadium in Omaha, Nebraska. In the 58th College World Series and the 55th series held in Omaha, the Cal State Fullerton Titans rode the arm of Jason Windsor, named the Series' Most Outstanding Player, to prevail over the field and claim the 2004 National Championship. The Titans won Bracket II with a 3–1 record and went on to sweep Bracket I winner Texas in two games to claim the title. Windsor picked up two complete game victories and a save, and threw more than 300 pitches in the series. Ricky Romero also recorded two wins for the Titans.

Bids

Automatic bids

Conference champions from 30 Division I conferences earned automatic bids to regionals. The remaining 34 spots were awarded to schools as at-large invitees.

Bids by conference

Tournament notes

College World Series notes

CWS records tied or broken

National seeds

Bold indicates CWS participant.

Regionals and super regionals

Bold indicates winner.

Austin Super Regional

Columbia Super Regional

Coral Gables Super Regional

Atlanta Super Regional

Long Beach Super Regional

Hosted by Long Beach State at Blair Field.

Baton Rouge Super Regional

Fullerton Super Regional

Fayetteville Super Regional

College World Series

Participants

Bracket

Championship series

Saturday 6/26 Game #1

Sunday 6/27 Game #2

All-Tournament Team

The following players were members of the College World Series All-Tournament Team.