Pieter Joshua de Villiers (born 3 July 1972) is a South African-born French rugby union player and coach.

At the club level, he has had a very successful career, playing on teams that won the Bouclier de Brennus as French champions in 1998, 2000, 2003, 2004, and 2007.

He also played in the subsequent famous semi-final victory over the New Zealand national rugby union team.

He cemented his position in the starting lineup, where he played all of the 2001 Six Nations Championship games as well as the June and November test matches.

He earned 10 international caps for France in 2005, as well as that, Stade Français were finalists at the 2004–05 Heineken Cup and French championship, though they lost both.