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. The twenty-ninth tournament's champion was Texas, coached by Cliff Gustafson, their first in a quarter-century. The Most Outstanding Player was Mickey Reichenbach of Texas. This was the first year the tournament used the regionals.