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Colorado State Rams
University	Colorado State University
Conference	Mountain West Pac-12 (starting July 1, 2026)
NCAA	Division I (FBS)
Athletic director	John Weber
Location	Fort Collins, Colorado
Varsity teams	15
Football stadium	Sonny Lubick Field at Canvas Stadium (2017–present)
Basketball arena	Moby Arena (1966-present)
Mascot	CAM the Ram
Nickname	Rams
Fight song	Colorado State University Fight Song
Colors	Green and gold[1]
Website	csurams.com

The Colorado State Rams are the athletic teams that represent Colorado State University (CSU). Colorado State's athletic teams compete along with 8 other institutions in the Mountain West Conference, which is an NCAA Division I conference and sponsors Division I FBS football. The Conference was formed in 1999, splitting from the former 16-member Western Athletic Conference.^[2] CSU has won nine MWC tournament championships and won or shared 11 regular season titles. Rams football teams won or shared the Mountain West title in 1999, 2000 and 2002.^[3]

Hughes Stadium (capacity: 34,000) was home to Rams football from 1968 through 2016. The field at Hughes Stadium, named "Sonny Lubick Field" after the Rams' coach, underwent a $15.2 million renovation for the fall 2005 season.^[4] Hughes Stadium was replaced for the 2017 season by the new Colorado State Stadium (capacity 41,000), whose playing field also bears Lubick's name; the stadium's name was changed to Canvas Stadium in 2018. Moby Arena (capacity: 9,000) originally constructed in 1966 and remodeled in 1996, is home to the men's and women's basketball teams, as well as the CSU Rams volleyball team.

The official school colors are green and gold. The CSU fight song and Fum's song are two popular school songs.

Colorado State has three major rivalries. Outside of the conference, the Rams play in-state rival Colorado in the Rocky Mountain Showdown, which was hosted at Empower Field at Mile High through 2019 before the series returned to on-campus stadiums. Within the Mountain West, Colorado State has a big rivalry with Air Force. The winner of the CSU-Air Force football game receives the Ram-Falcon Trophy. Colorado State also has a conference rivalry with Wyoming (the Border War), with the winner of the annual football game receiving the Bronze Boot. Played since 1899, the CSU-Wyoming rivalry is the second oldest interstate rivalry west of the Mississippi, behind only the "Border Showdown" (formerly "Border War") of Missouri and Kansas and just ahead of the "Red River Rivalry" (formerly "Red River Shootout") of Texas and Oklahoma played since 1900.