This is a list of qualifying teams for the 2021 NCAA Division I Men's Basketball Tournament. A total of 68 teams will participate in the tournament. 31 of the teams will earn automatic bids by winning their conference tournaments; normally, this would be 32 teams, but the Ivy League cancelled play for this season. The remaining 37 (normally 36) teams will be granted at-large bids, which were extended by the NCAA Selection Committee. All teams will be seeded 1 to 16 within their regions, while the Selection Committee will seed the entire field from 1 to 68.