The 2024–25 Horizon League men's basketball season began with practices in September 2023 and will end with the 2025 Horizon League men's basketball tournament in March 2025.

The following table summarizes the multiple-team events (MTE) or early-season tournaments in which teams from the Horizon League will participate.

The first round and quarterfinals are hosted at campus sites, while the semifinals and finals are held at Indiana Farmers Coliseum in Indianapolis, Indiana.

The top five teams receive a bye to the quarterfinals and the bracket is re-seeded after every round.

Horizon League players were selected to the following preseason award watchlists: