Willem Jacobus le Roux (born 18 August 1989) is a South African rugby union footballer. He is an extremely versatile back-line player who generally plays as a fullback or wing, though earlier in his career he played mostly as a fly-half.
Le Roux was born and raised in the Western Cape and he started his professional career with Boland Cavaliers. He spent 2 years with the Cavaliers, helping them to lift the 2011 Currie Cup First Division title in his final appearance. He moved north to join the Griquas along with several of his Boland team-mates in 2012 and started 9 of the Peacock Blues 10 games during his debut season in Kimberley. After a rocky start in which he was sin-binned for a dangerous tackle on Blue Bulls full-back Jurgen Visser and subsequently suspended for Griquas second match of the season Le Roux established himself as one of the top players in South African domestic rugby.