The University of Michigan Wolverines have 25 undefeated seasons.
Michigan State Spartans
Michigan with 25 (but, since 1990, it's the Auburn Tigers with 3- WAR EAGLE!!!)
Not sure if they are the top but university of miami went undefeated many, many times...id go with them
The University of Alabama and the University of Oklahoma are tied for the most with 30 ten-win seasons. This is including the 2009 season.
30 - Florida State
Auburn 2010 5