The 1984 NCAA Division I men's basketball tournament involved 53 schools playing in single-elimination play to determine the national champion of men's NCAA Division I college basketball. It began on March 13, 1984, and ended with the championship game on April 2 in Seattle. A total of 52 games were played. This was the last tournament in which some teams earned first-round byes as the field expanded to 64 teams beginning in the 1985 tournament when each team played in the first round. It was also the second year with a preliminary round; preliminary games would not be played again until 2001.