The Colorado Buffaloes are the athletic teams that represent the University of Colorado Boulder. The university sponsors 16 varsity sports teams. Both the men's and women's teams are called the Buffaloes or, rarely, the Golden Buffaloes. "Lady Buffs" referred to the women's teams beginning in the 1970s, but was officially dropped in 1993. The nickname was selected by the campus newspaper in a contest with a $5 prize in 1934 won by Andrew Dickson of Boulder.

The University of Colorado Boulder is a public research university in Boulder, Colorado, United States. Founded in 1876, five months before Colorado became a state, it is the flagship university of the University of Colorado system. CU Boulder is a member of the Association of American Universities and is classified among R1: Doctoral Universities – Very high research activity.