Larry Kehres, of Mount Union College, Division III, with 10 national championships.
(If you meant Division I-FBS, the answer is Paul "Bear" Bryant, no matter how you slice it. So please don't clutter this answer with a bunch of also-rans who came CLOSE to having as many as Bryant. The Bear is the King.)
Larry Kehres, of Mount Union College, Division III, with 9 national championships.
Urban Meyer (2006 & 2008)
Charlie Weis, tied with many others: zero.
Coach K, of Duke. I believe...
Nick Saban of Alabama.
Coach McDonnell to retire after earning 42 national titles
Paul Brown was an American Football coach. He was the coach in the All-America Football Conference and National Football League.His teams won seven league championships.
John Wooden with 10 championships at UCLA. UCLA won another championship under coach Jim Harrick. With 11 championships UCLA has the most championships.