The 2008 National Invitation Tournament was a single-elimination tournament of 32 National Collegiate Athletic Association Division I teams that did not participate in the 2008 NCAA Men's Division I Basketball Tournament. The 71st annual tournament began on March 18 on campus sites and ended on April 3 at Madison Square Garden in New York City. Each regular season conference champion that did not receive a bid to the NCAA Tournament received an automatic bid to this tournament. The remaining slots were filled by the NIT Selection Committee. The first, second, and third rounds were played on the higher seeded team's home court, with the semi-finals and finals played at Madison Square Garden.
The Ohio State Buckeyes won the tournament.