How many Heisman Trophy winners do the Oklahoma Sooners have?

There have been 6 Heisman Trophy winners from the University of Oklahoma Sooners.

1952 Billy Vessels

1969 Steve Owens

1978 Billy Sims

2003 Jason White

2008 Sam Bradford

2017 Baker Mayfield For Oklahoma State University Cowboys, Barry Sanders won the Heisman in 1988.