The 2012 Horizon League Men's Basketball Tournament began on February 28 and ended on March 6.

The semifinals were televised by ESPNU, with the championship game on ESPN.

Each first-round game was played on the home court of the higher-seeded team.

Since Valparaiso advanced to the championship game, the Crusaders also hosted the final.

First round games at campus sites of lower-numbered seeds Second round and semifinals hosted by Valparaiso Championship game hosted by highest remaining seed Ray McCallum, Jr. of Detroit was named the tournament MVP.