Jan Nathaniel du Plessis is a former South African rugby union player, who played as a prop for Montpellier in the French Top 14 and the Lions in Super Rugby. He played for the Free State Cheetahs in the Currie Cup and the Cheetahs in Super Rugby until 2007, when he joined Durban-based side the Sharks, where he played until 2015. He won 70 caps for South Africa between 2007 and 2015.

Bismarck Wilhelm du Plessis is a South African former professional rugby union player, who played for the Bulls in the United Rugby Championship and for the Blue Bulls in the Currie Cup. He played for the Free State Cheetahs in 2003, before moving to the Sharks in 2005 where he spent the bulk of his career, and then to Montpellier in the French Top 14. He is widely acknowledged to be one of the best hookers of his time, both in club and country performances.