1975 NCAA Division I baseball tournament

The 1975 NCAA Division I baseball tournament was played at the end of the 1975 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 twenty-ninth year. Eight regional competitions were held to determine the participants in the final event. Each region held a four team, double-elimination tournament, resulting in 32 teams participating in the tournament at the conclusion of their regular season, and in some cases, after a conference tournament.[1] The twenty-ninth tournament's champion was Texas, coached by Cliff Gustafson, their first in a quarter-century.[2] The Most Outstanding Player was Mickey Reichenbach of Texas. This was the first year the tournament used the regionals.

The 1975 tournament marked the first appearance for LSU, which would become a college baseball superpower in the succeeding decades, claiming seven national championships between 1991 and 2023. LSU had earlier won the 1961 Southeastern Conference championship to earn an automatic bid to the NCAA tournament, but declined the bid to avoid playing integrated teams.

This season also marked the first appearance for Cal State Fullerton, which would claim four national championships from 1979 through 2004. Head coach Augie Garrido guided the Titans to three titles before moving to Texas, where he claimed three more titles from 2002 through 2009.