| Mar del Plata Open | |
| Type: | defunct |
| Founded: | 1979 |
| Ended: | 1981 |
| Editions: | 3 |
| Event Name: | Mar del Plata Open |
| Location: | Mar del Plata, Buenos Aires Province, Argentina |
| Surface: | Clay / outdoor |
The Mar del Plata Open is a defunct Grand Prix affiliated men's tennis tournament founded in 1979 as the Mar del Plata Invitation. It was held at the Patinódromo Municipal, Mar del Plata in Argentina and played on outdoor clay courts.[1]
It was the successor tournament to the earlier Mar del Plata Championships (an open international event) that was staged at the Temperley Lawn Tennis Club, Temperley, Buenos Aires Province, Argentina from 1930 to 1966.
| Year | Champions | Runners-up | Score |
|---|---|---|---|
| 1979 | 6–4, 7–5, 6–3 | ||
| 1980 | 6–1, 6–3, 6–3 | ||
 Guillermo Vilas (2) | 2–6, 6–3, 2–1 RET. | ||