The 1971 South African Open was a combined men's and women's tennis tournament played on outdoor hard courts at the Ellis Park Tennis Stadium in Johannesburg, South Africa. It was the 68th edition of the tournament and was held from 5 April through 17 April 1971. Ken Rosewall and Margaret Court won the singles titles.

Finals

Men's singles Ken Rosewall defeated Fred Stolle 6–4, 7–5, 3–6, 6–4

Women's singles Margaret Court defeated Evonne Goolagong 6–3, 6–1

Men's doubles Ken Rosewall / Fred Stolle defeated Bob Hewitt / Frew McMillan 5–7, 6–2, 6–1, 6–2

Women's doubles Margaret Court / Evonne Goolagong defeated Brenda Kirk / Laura Rossouw 6–3, 6–2

Mixed's doubles Margaret Court / Fred Stolle defeated Ray Ruffels / Pat Walkden 6–3, 7–6

References