Louisville Open

The Louisville Open is a defunct Grand Prix and WCT affiliated men's tennis tournament played from 1970 to 1979. It was held in Louisville, Kentucky in the United States and played on outdoor hard courts in 1970 and on outdoor clay courts from 1971 to 1979.

Guillermo Vilas was the most successful player at the tournament, winning the singles competition three times and the doubles competition once with Pole Wojciech Fibak.