The 2011–12 Colorado State Rams men's basketball team represented Colorado State University during the 2011–12 NCAA Division I men's basketball season.

They played their home games at the Moby Arena on Colorado State University's main campus in Fort Collins, Colorado and are a member of the Mountain West Conference.

They lost in the semifinals of the Mountain West Basketball tournament to San Diego State.

[1] They received an at-large bid to the 2012 NCAA basketball tournament where they lost in the second round to Murray State.

The Colorado State Rams lost senior power forward Andy Ogide who was averaging 17.2 ppg, senior Small Forward Travis Franklin who was averaging 11.8 ppg, Adam Nigon and Andre McFarland.