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- Racer 1- live horse mascot during football games for Murray State University
- Raider - one of three live mule mascots for the United States Military Academy (Army) and the mascot of Colgate University.
- Raider Red — one of the official mascots of the Texas Tech Red Raiders
- Rally — the mascot of the University of Vermont Catamounts.
- Ralphie — a live American Bison the official mascot of the Colorado Buffaloes
- Ralphie — a costumed male greyhound mascot for Eastern New Mexico University
- Ramblin' Wreck - the 1930 Ford Model A Sports Coupe mascot of Georgia Tech
- Rameses — a live ram that serves as the mascot for the North Carolina Tar Heels. It is also the name of the costumed mascot.
- Rammy — the mascot for West Chester University of Pennsylvania.
- Ranger D. Bear - the mascot for University of Wisconsin–Parkside
- Ranger II - one of three live mule mascots for the United States Military Academy (Army)
- Razor the Shark - Nova Southeastern University
- Rawhide - the mascot for Western New Mexico University
- Reddie Spirit - Henderson State University
- Reggie Redbird — Illinois State University
- Reveille — a live collie that serves as the mascot for the Texas A&M Aggies and is taken care of by the Corps of Cadets
- Rex the Lion — Queens University of Charlotte
- Rhett the Boston Terrier — the Boston Terrier representing Boston University
- Rhody the Ram - University of Rhode Island
- Ribby — The Razorback mascot for the University of Arkansas baseball team.
- RITchie the Tiger — the mascot for the Rochester Institute of Technology.
- Riptide — the costumed Pelican mascot of Tulane University.
- Roar-ee the Lion - the official mascot of Columbia University. Created in October 2005.
- Roary the Panther — the official mascot of the Florida International University Golden Panthers
- Roc the Panther — the costumed mascot of the Pittsburgh Panthers (University of Pittsburgh).
- Rocky — the mascot for Widener University (Pa.). (Retired October 7, 2006. New mascot to be announced)
- Rocky — a costumed yellowjacket, the official mascot of the University of Rochester
- Rocky Raider - the mascot for Three Rivers Community College (Poplar Bluff, Missouri)
- Rocky the Bull — the mascot of University of South Florida.
- Rocky II the Lion — mascot for the Slippery Rock University of Pennsylvania Pride.
- Rocky the Red Hawk — mascot of Montclair State University.
- Rocky the Rocket — mascot of the University of Toledo.
- Rodney the Ram — the mascot of Virginia Commonwealth University.
- Rodney the Raven — the mascot of Anderson University.
- Rosie — the costumed elephant mascot of the Rose-Hulman Institute of Technology "Fightin' Engineers."
- Roomie the Lion — mascot of the Southeastern Louisiana University.
- Roongo the Husky — is the mascot for Bloomsburg University of Pennsylvania.
- Rooney - is the official mascot for the Roanoke College Maroons.
- Rowdy — an unofficial mascot of Purdue University (for official mascot — see Boilermaker Special)
- Rowdy - a Roadrunner that is the costumed mascot of California State University, Bakersfield (CSUB).
- Rowdy — a Roadrunner that is the mascot for the University of Texas at San Antonio.
- Rowdy Raider — is the mascot for Wright State University. It used to be a Viking, but was changed to a wolf in 1997.
- Rowdy the Panther — is the mascot for Birmingham-Southern College.
- Rowdy the Riverhawk — is the mascot for University of Massachusetts Lowell.
- Rowdy the Red Hawk — is the mascot for Southeast Missouri State University
- Rowdy the Cowboy — is the mascot for McNeese State University
- Roxie — a costumed female greyhound mascot for Eastern New Mexico University
- Rudy Flyer — is the mascot for the University of Dayton
- Rudy the Redhawk — is the mascot for Seattle University
- Ruckus — the Red-tailed Hawk mascot of University of Denver
- Rufus — the Bobcat mascot for Ohio University.
- Rufus — the Red Wolf mascot for Indiana University East.
Read more about this topic: List Of College Mascots In The United States, Mascot Index