Junior guard Devin Royal added 16 points in the first half, helping the Buckeyes build a double-digit lead against the Badgers.
The victory improves Ohio State's record to 17-9 and keeps the team alive in the NCAA Tournament conversation.
Ohio State tops Wisconsin, Thornton passes Lucas and Buford
Ohio State defeated No. 24 Wisconsin 86-69, with guard Bruce Thornton passing Buckeyes legends Jerry Lucas and Scoonie Penn on the all-time scoring list.