1965 NCAA University Division baseball season

The 1965 NCAA University Division baseball season, play of college baseball in the United States organized by the National Collegiate Athletic Association (NCAA) began in the spring of 1965. The season progressed through the regular season and concluded with the 1965 College World Series. The College World Series, held for the nineteenth time in 1965, consisted of one team from each of eight geographical districts and was held in Omaha, Nebraska at Johnny Rosenblatt Stadium as a double-elimination tournament. Arizona State claimed the championship.

Conference winners
This is a partial list of conference champions from the 1965 season. Each of the eight geographical districts chose, by various methods, the team that would represent them in the NCAA tournament. 10 teams earned automatic bids by winning their conference championship while 13 teams earned at-large selections.

Conference standings
The following is an incomplete list of conference standings:

College World Series
The 1965 season marked the nineteenth NCAA baseball tournament, which culminated with the eight team College World Series. The College World Series was held in Omaha, Nebraska. The eight teams played a double-elimination format, with Arizona State claiming their first championship with a 2–1 win over Ohio State in the final.