Marthinus "Oupa" Versfeld (15 May 1860 – 1 September 1931) was a South African international rugby union player.

[1] Born in Constantia and educated in Cape Town, where he attended SACS, Versfeld was the oldest of five brothers, four of whom played representative rugby.

All four brothers were members and played for the Hamiltons RFC, based in Sea Point, Cape Town.

Oupa and Hasie played alongside John in a Cape Town XV against Bill MacLagan's 1891 British tourists.

Hasie became the first South African to score a try against an international touring side in Cape Town's 1–15 loss at Newlands on 9 July 1891.