1978 Rio de la Plata Championships
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| 1978 Rio de la Plata Championships | |
|---|---|
| Date | 30 October – 5 November |
| Category | Colgate Series (A) |
| Draw | 32S / 16D |
| Prize money | $35,000 |
| Surface | Clay / outdoor |
| Location | Buenos Aires, Argentina |
| Champions | |
| Singles | |
 Caroline Stoll | |
| Doubles | |
 Françoise Dürr / Valerie Ziegenfuss | |
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[a] category of the 1978 Colgate Series. The tournament was held from 30 October through 5 November 1978.[2] Third-seeded Caroline Stoll won the singles title and earned $6,000 first-prize money.[2][1]
Singles
Caroline Stoll defeated 
Emilse Raponi 6–3, 6–2
- It was Stoll's 1st title of the year and the 1st of her career.
Doubles
Françoise Dürr / Valerie Ziegenfuss defeated Laura DuPont / 
Regina Maršíková 1–6, 6–4, 6–3
Prize money
| Event | W | F | SF | QF | Round of 16 | Round of 32 |
| Singles [2] | $6,000 | $3,000 | $1,800 | $900 | $600 | $325 |
|---|