The 1998 NCAA Division I Men's Swimming and Diving Championships were contested in March 1998 at the James E. Martin Aquatics Center at Auburn University in Auburn, Alabama at the 75th annual NCAA-sanctioned swim meet to determine the team and individual national champions of Division I men's collegiate swimming and diving in the United States.
Stanford topped the team standings for the eighth time, finishing 104.5 points ahead of hosts and defending champions Auburn.
Legend: US â U.S. Open record; AR â American record;
Although Sabir Muhammad's time of 46.18 was faster than the American record (46.26), it was not ratified because he exceeded the 15-meter limit for the underwater phase.