The 1978 Rio de la Plata Championships, also known as the River Plate Championships, was a women's singles tennis tournament played on outdoor clay courts in Buenos Aires in Argentina. The event was part of the A category of the 1978 Colgate Series. The tournament was held from 30 October through 5 November 1978. Third-seeded Caroline Stoll won the singles title and earned $6,000 first-prize money.
Caroline Stoll defeated Emilse Raponi 6âÂÂ3, 6âÂÂ2
Françoise Dürr / Valerie Ziegenfuss defeated Laura DuPont / Regina Marà ¡ÃÂková 1âÂÂ6, 6âÂÂ4, 6âÂÂ3