The 2020–21 Ohio State Buckeyes men's basketball team represented Ohio State University in the 2020–21 NCAA Division I men's basketball season.

Their head coach was Chris Holtmann, in his fourth season with the Buckeyes.

The Buckeyes played their home games at Value City Arena in Columbus, Ohio as members of the Big Ten Conference.

They defeated Minnesota, Purdue, and Michigan before losing to Illinois in overtime in the championship game of the Big Ten tournament.

[1] The 2020 Big Ten men's basketball tournament and 2020 NCAA Division I men's basketball tournament were cancelled due to the COVID-19 pandemic.