1983 NCAA Division I baseball tournament

The 1983 NCAA Division I baseball tournament was played at the end of the 1983 NCAA Division I baseball season to determine the national champion of college baseball. The tournament concluded with eight teams competing in the College World Series, a double-elimination tournament in its thirty seventh year. Eight regional competitions were held to determine the participants in the final event. Six regions held a four team, double-elimination tournament while two regions included six teams, resulting in 36 teams participating in the tournament at the conclusion of their regular season, and in some cases, after a conference tournament. The thirty-seventh tournament's champion was Texas, coached by Cliff Gustafson. The Most Outstanding Player was Calvin Schiraldi of Texas.

National seeds
Bold indicates CWS participant.
 * BYU
 * Florida State
 * Michigan
 * Stanford
 * Texas

Regionals
The opening rounds of the tournament were played at eight regional sites across the country, six consisting of four teams and two of six teams. The winners of each Regional advanced to the College World Series.

Bold indicates winner.

Game results

 * Texas was the last school to go undefeated in the CWS under the true double-elimination format, which was used from 1950 through 1987. No CWS team would go undefeated again until LSU in 1991.

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

Notable players

 * Alabama: Dave Magadan, Craig Shipley
 * Arizona State: Chris Beasley, Barry Bonds, Doug Henry, Oddibe McDowell, Don Wakamatsu
 * James Madison:
 * Maine: Bill Swift
 * Michigan: Scott Kamieniecki, Barry Larkin, Chris Sabo, Gary Wayne
 * Oklahoma State: Carlos Diaz, John Farrell, Gary Green, Mike Henneman, Pete Incaviglia, Robbie Wine
 * Stanford: Mike Aldrete, Jeff Ballard, Mark Davis, Pete Stanicek
 * Texas: Billy Bates, Mike Brumley, Mike Capel, Roger Clemens, Jeff Hearron, Bruce Ruffin, Calvin Schiraldi, Jose Tolentino