The answer is Oklahoma State which has won 34 championships in Wrestling, here is a full list of champions from all three divisions:
Division 1:
Oklahoma State - 34
Iowa - 22
Iowa State - 8
Oklahoma - 7
Minnesota - 3
Arizona State - 1
Michigan State - 1
Penn State - 1
Northern Iowa - 1 (Div 2 in 75, 78)
Cornell - 1
Indiana - 1
Division 2:
Cal-Poly - 8
Cal State Bakersfield - 8
Central Oklahoma - 7
Nebraska Omaha - 5
North Dakota State - 4
Portland State - 3
Southern Illinois Edwardsville - 3
Western State - 2
Pitt Johnstown - 2
Northern Iowa - 2
Mankato State - 1
San Fransisco State - 1
Nebraska Kearney -
Division 3:
Augsburg - 10
Wartburg - 7
Trenton State - 5
Brockport State - 5
Ithaca - 3
Montclair State - 2
Buffalo State - 1
St. Lawrence - 1
Wilkes - 1
John Carroll - 1
They have won 21 national wrestling championships
SEC
The UCLA Lady Bruins have won the most National Championships in Collegiate Fastpitch Softball...I believe they have won 25 or 26 National Championships.
big ten
Alabama has the most national championships for ncaa football with 12. Notre Dame is right behind them with 11. ROLL TIDE!!!!!
Arkansas Razorbacks 42 national championships in track
Alabama has 12 national championships, and 53 bowl appearances, both NCAA records.
sec
UCLA
The UCLA Bruins :11
Alabama, with 33 bowl victories out of 58 appearences and 14 national championships.
UCLA has won 11 NCAA mens championships. Tennessee has won 8 NCAA women's championships.