This is a list of qualifying teams in the 2023 NCAA Division I men's basketball tournament. A total of 68 teams are entered into the tournament. Thirty-two of the teams qualified via automatic bids, usually earned by winning their conference tournaments, while the remaining 36 teams were via "at-large" bids, which are extended by the NCAA Selection Committee. Teams are seeded from 1 to 16 within each of the four regionals, while the Selection Committee also seeded the entire field from 1 to 68.
Automatic bids
A total of 32 automatic bids to the tournament were granted to the below listed conferences, normally to the team that won the conference's championship tournament.[1]Seeds listed reflect seeding within the conference tournaments. Runners-up in boldface later received at-large berths.
The tournament seeds and regions were determined through the NCAA basketball tournament selection process and were published by the selection committee after the brackets were released.
^ abDespite losing the NEC championship game, Fairleigh Dickinson received the NEC's automatic bid because Merrimack, who defeated them, is ineligible for the NCAA Tournament due to a transition from Division II.