Yvonne van Mentz is a South African former cricketer who played as an all-rounder.
She appeared in four Test matches for South Africa in 1960 and 1961, all against England.
[4] She first faced England during a warm-up match for the touring side, appearing for Southern Transvaal.
[6] After playing for a South African XI against England without making a significant impact,[7] van Mentz was South Africa's leading wicket-taker in the second Test, taking four wickets as England declared their innings closed on 351 for 6.
[11] Her score is the highest of just two centuries by South African women in Test cricket, the other being a total of exactly 100 by Brenda Williams.