The 2023–24 Horizon League men's basketball season will begin with practices in September 2023 and end with the 2024 Horizon League men's basketball tournament in March 2024. This is the 44th season for Horizon League men's basketball.
Head coaches
Coaching changes
On January 31, 2023, Green Bay fired head coach Will Ryan after three seasons and a 2–19 start. Assistant coach Freddie Owens was named interim head coach. On March 14, the Phoenix hired Wyoming assistant coach Sundance Wicks as their new head coach.
Coaches
Notes:
Year at school includes 2023–24 season. Records are prior to 2023–24 season.
Preseason
Preseason coaches poll
Preseason All-Horizon League
Regular season
Conference matrix
Early season tournaments
The following table summarizes the multiple-team events (MTE) or early season tournaments in which teams from the Horizon League will participate.
Postseason
Horizon League tournament
The conference tournament will be played from March 5 to March 12, 2023. The first round and quarterfinals are hosted at campus sites, while the semifinals and finals are held at Indiana Farmers Coliseum in Indianapolis, Indiana. Teams are seeded by conference record, with ties broken by record between the tied teams followed by record against the regular-season champion, if necessary. The top five teams receive a bye to the quarterfinals and the bracket is re-seeded after every round.