| 1985 South African Open | |
|---|---|
| Date | 7–13 October |
| Edition | 82nd |
| Category | Grand Prix |
| Draw | 32S / 16D |
| Prize money | $210,000 |
| Surface | Hard / outdoor |
| Location | Johannesburg, South Africa |
| Venue | Ellis Park Tennis Stadium |
| Champions | |
| Singles | |
| | |
| Doubles | |
| | |
The 1985 South African Open (also known as the 1985 Altech South African Open for sponsorship reasons) was a men's tennis tournament played on outdoor hard courts in Johannesburg, [South Africa that was part of the 1985 Nabisco Grand Prix. It was the 82nd edition of the tournament and was held from 7 through 13 October 1985. Unseeded Matt Anger won the singles title.
Matt Anger defeated
Brad Gilbert 6–4, 3–6, 6–3, 6–2
Colin Dowdeswell /
Christo van Rensburg defeated
Amos Mansdorf /
Shahar Perkiss 3–6, 7–6, 6–4