Until now, none.
6, 1938, 1940, 1950, 1951, 1967, 1998
They claim six: 1938, 1940, 1950, 1951, 1967 and 1998. However, the NCAA recognizes Oklahoma as the consensus champion in 1950, and Southern California as the consensus champion in 1967.
40 national championships, 38 ncaa national championships
3 NCAA Tournament Championships1952, 1988, 2008
The University of Oklahoma has won 7 undisputed NCAA Football Championships.
Three NCAA championships, but KU also had two national titles back in the twenties, before NCAA.
None
zero
1. in 1989.
three
None.
One