The Ohio State University's intercollegiate sports teams and players are called the "Buckeyes" (after the state tree, the Buckeye), and participate in the NCAA's Division I in all sports and the Big Ten Conference in most sports. (The men's hockey program competes in the Central Collegiate Hockey Association, and its women's hockey program competes in the Western Collegiate Hockey Association). The school colors are scarlet and gray (see trivia note below). The mascot of OSU is Brutus Buckeye.

Ohio State is one of only four universities to have won an NCAA national championship in baseball, basketball and football. Ohio State has also won national championships in men's swimming & diving, men's outdoor track & field, men's golf, men's gymnastics, men's fencing, co-ed fencing, and synchronized swimming. Since the inception of the Athletic Director's Cup, Ohio State has finished in the top 25 each year, including top 6 finishes in three of the last five years. During the 2005-2006 school year Ohio State became this first Big Ten team to win conference championships in football, men's basketball and women's basketball in the same season. They repeated this feat in the 2006-2007 season, which also included a February 25, 2007 men's basketball game which saw the Buckeyes defeat the Wisconsin Badgers in the Big Ten's first one-versus-two basketball game.

Outstanding sports figures that were student athletes at Ohio State include Jesse Owens (“The Buckeye Bullet”; track and field), John Havlicek, Jerry Lucas, and Katie Smith (basketball), Frank Howard (baseball), Jack Nicklaus (golf); and Chic Harley (three-time All-American football running back). Hall of Fame coaches at Ohio State have included Paul Brown and Woody Hayes in football, Fred Taylor in basketball, Larry Snyder in track and field, and Mike Peppe in swimming and diving. Notable sports figures in Ohio State history may be inducted into the Ohio State Varsity O Hall of Fame.

Football

main: Ohio State Buckeyes football

• National Champions : 1942, 1954, 1957, 1961, 1968, 1970, 2002
• Big Ten Champions :1916, 1917, 1920, 1935, 1939, 1942, 1944, 1949, 1954, 1955, 1957, 1961, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1979, 1981, 1984, 1986, 1993, 1996, 1998, 2002, 2005, 2006, 2007
• OCA Champions :1906,1912
• Heisman Winners : Les Horvath, Vic Janowicz, Howard Cassady, Archie Griffin, Eddie George, Troy Smith

Men's Basketball

Main: Ohio State Buckeyes men's basketball

The Ohio State men's basketball team has played in Ten NCAA Final Fours, winning the championship in 1960, when they were led by Basketball Hall of Famers Jerry Lucas, John Havlicek, and Bob Knight off the bench. Twenty-three times a Buckeye has been named first team All American including five two-time All Americans and one three-time All American. Between 1960 and 1964 Ohio State won five consecutive Big Ten championships, an achievement that has yet to be matched.