1999–2000 Ohio State Buckeyes men's basketball team

The 1999–2000 Ohio State Buckeyes men's basketball represented Ohio State University during the 1999–2000 NCAA Division I men's basketball season. Led by third-year head coach Jim O'Brien, the Buckeyes finished 23–7 (13–3 Big Ten) and reached the second round of the NCAA tournament. However, the NCAA adjusted the team's record to 11-3 due to sanctions resulting from the Jim O’Brien scandal.

Schedule and results
!colspan=9 style= | Regular Season

!colspan=9 style= | Big Ten Tournament

!colspan=9 style= | NCAA Tournament