Willem du Plessis (born 4 September 1955)[1] is a former South African rugby union player.
Du Plessis was born in Somerset East in the Eastern Cape province of South Africa.
Du Plessis was educated at Gill College in Somerset East and in 1973, represented North Eastern Cape at the annual Craven Week tournament.
[2] In 1975, du Plessis enrolled at Stellenbosch University for a degree in Physical Education and in 1977 made his debut for Western Province.
[2] In 1979, du Plessis was named one of the five South African Young Players of the Year, along with Darius Botha, Doug Jeffrey, Andre Markgraaff and Gawie Visagie.