The 1978 Wendy's Tennis Classic, also known as the Buckeye Championships, was a men's tennis tournament played on outdoor clay courts at the Muirfield Village in Dublin, a suburb of Columbus, Ohio in the United States that was part of the 1978 Grand Prix circuit.

It was the ninth edition of the tournament and was held from August 7 through August 13, 1978.

Third-seeded Arthur Ashe won the singles title and earned $12,750 first-prize money.

[3][4] Arthur Ashe defeated Bob Lutz 6–3, 6–4 Colin Dibley / Bob Giltinan defeated Marcello Lara / Eliot Teltscher 6–2, 6–3