2011–12 Horizon League men's basketball season

The 2011–12 Horizon League men's basketball season marks the 32nd season of Horizon League basketball.

Preseason
In the preseason, Butler was the conference favorite despite returning only one of their top four scorers from the 2011 national runner-up team. Butler received 28 first-place votes in the preseason poll of HL coaches, media, and sports information directors. Detroit captured second in the preseason poll with 19 first-place votes, and Cleveland State finished third for the third consecutive preseason. The preseason player of the year was Ray McCallum, Jr. of Detroit who was also named to the John R. Wooden Award preseason candidate list.

First Team

 * Ray McCallum, Jr., Detroit
 * Trevon Harmon, Cleveland State
 * Eli Holman, Detroit
 * Chase Simon, Detroit
 * Kaylon Williams, Milwaukee

Second Team

 * Tony Meier, Milwaukee
 * Alec Brown, Green Bay
 * Andrew Smith, Butler
 * Ben Averkamp, Loyola
 * Ryan Broekhoff, Valparaiso

Preseason Player of the Year 
 * Ray McCallum, Jr., Detroit

Conference Previews
Several media outlets projected the final Horizon League standings for the 2011–12 season:

Non-conference schedule
!colspan=12| November

!colspan=12| December

!colspan=12| January

!colspan=12| February

Weekly awards
HL Players of the Week Throughout the conference season, the HL offices name a player of the week.