1978 NCAA Division I baseball tournament

The 1978 NCAA Division I baseball tournament was played at the end of the 1978 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-second year. Eight regional competitions were held to determine the participants in the final event. Seven regions held a four team, double-elimination tournament while one region included six teams, resulting in 34 teams participating in the tournament at the conclusion of their regular season, and in some cases, after a conference tournament. The thirty-second tournament's champion was Southern California, coached by Rod Dedeaux. The Most Outstanding Player was Rod Boxberger of Southern California.

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

Bold indicates winner.

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

Notable players

 * Arizona State: Jamie Allen, Chris Bando, Hubie Brooks, Bob Horner, Dave Hudgens
 * Baylor: Andy Beene, Jaime Cocanower, Fritzie Connally, Jon Perlman
 * Miami (FL): Tony Brewer
 * Michigan: Steve Howe, Rick Leach
 * North Carolina: Dwight Lowry, Mike Fox
 * Oral Roberts: George Bjorkman, Ron Meridith
 * Southern California: Bill Bordley, Dave Engle, Dave Hostetler, Jeff Schattinger, Bob Skube, Chris Smith, Tim Tolman, Dave Van Gorder
 * St. John's: Michael Beatrice, Doug LaTrenta

Tournament notes

 * Chris Bando appears in his fourth College World Series.