The win is the 17th in a row for the Badgers, extending the nation's longest win streak.
Brian Butch added 13 points and 14 rebounds for the Badgers. Wisconsin improved to 21-1, their best start in school history. The Badgers are also 7-0 in the Big Ten, the team's best conference start since the Badgers went 12-0 in 1914.
Iowa shot just 28 % from the field, hitting only 16 of 57.
Wisconsin is back on the road Wednesday, at Indiana.