Piet du Plessis

 Pieter George du Plessis  (born 23 July 1947) is a former South African rugby union player.

Playing career
Du Plessis studied at the University of Pretoria and Stellenbosch University and became a Professor of Business Management. He played provincial rugby for and.

Du Plessis played one test for the Springboks, the 1972 test match against the touring England team at Ellis Park in Johannesburg.