Willem Viljoen

Willem Abraham Viljoen (born 5 March 1985) is a South African badminton player. He competed for South Africa at the 2012 London Summer Olympics, and at the Glasgow 2014 Commonwealth Games. At the All-African Games, he has collected 2 golds and six silvers. Her sister Annari Viljoen also the Olympian who was competed in London 2012.

All African Games
Men's doubles

Mixed doubles

African Championships
Men's singles

Men's doubles

Mixed doubles

BWF International Challenge/Series (24 titles, 13 runners-up)
Men's singles

Men's doubles

Mixed doubles
 * BWF International Challenge tournament
 * BWF International Series tournament
 * BWF Future Series tournament