1983 ATP Championship

The 1983 ATP Championship, also known as the ATP Championships, was a men's tennis tournament played on outdoor hard courts at the Lindner Family Tennis Center in Mason, Ohio in the United States that was part of the 1983 Volvo Grand Prix. The tournament was held from August 20 through August 26, 1983. Fourth-seeded Mats Wilander won the singles title.

1983 ATP Championship
Date	August 20–26
Edition	82nd
Category	Grand Prix circuit
Draw	64S / 32D
Prize money	$300,000
Surface	Hard / outdoor
Location	Mason, Ohio, US
Venue	Lindner Family Tennis Center
Champions
Singles
Mats Wilander[1]
Doubles
Victor Amaya / Tim Gullikson[2]

Finals

Singles

Mats Wilander defeated John McEnroe 6–4, 6–4

• It was Wilander's 5th singles title of the year and the 9th of his career.

Doubles

Victor Amaya / Tim Gullikson defeated Carlos Kirmayr / Cássio Motta 6–4, 6–3