The 1998 NCAA Division I baseball season, play of college baseball in the United States organized by the National Collegiate Athletic Association (NCAA) began in the spring of 1998. The season progressed through the regular season and concluded with the 1998 College World Series. The College World Series, held for the fifty second time in 1998, consisted of one team from each of eight regional competitions and was held in Omaha, Nebraska at Johnny Rosenblatt Stadium as a double-elimination tournament. Southern California claimed the championship for the twelfth time, and first since 1978.