The 1981 National Revenue Tennis Classic, also known as the Buckeye Championships, was a men's tennis tournament played on outdoor hardcourts at the Buckeye Boys Ranch in Grove City, a suburb of Columbus, Ohio in the United States that was part of the 1981 Volvo Grand Prix circuit.

It was the 12th edition of the tournament and was held from August 3 through August 9, 1981.

First-seeded Brian Teacher won the singles title and earned $15,000 first-prize money.

[3][4] Brian Teacher defeated John Austin 6–3, 6–2 Bruce Manson / Brian Teacher defeated Anand Amritraj / Vijay Amritraj 6–1, 6–1