The 1979 South African Open was a combined men's and women's tennis tournament played on outdoor hard courts in Johannesburg, South Africa.

The men's tournament was part of the 1979 Colgate-Palmolive Grand Prix.

It was the 76th edition of the tournament and was held from 27 November through 3 December 1979.

Andrew Pattison and Brigitte Cuypers won the singles titles.

[3] Andrew Pattison defeated Víctor Pecci 2–6, 6–3, 6–2, 6–3 Brigitte Cuypers defeated Tanya Harford 7–6, 6–2 Bob Hewitt / Frew McMillan defeated Heinz Günthardt / Paul McNamee 1–6, 6–1, 6–4 Lesley Charles / Tanya Harford defeated Françoise Dürr / Marise Kruger 1–6, 6–1, 6–4