Jonathan Callum Brownlee (born 30 April 1990) is an English professional duathlete and triathlete. He was the 2012 Triathlon World Champion, and the silver medalist in 2013. Brownlee is also a two-time, and the reigning, World Sprint Triathlon Champion and is the former Under 23 Triathlon World Champion (2010). Brownlee won the bronze medal in the Olympic triathlon at the London 2012 Olympic Games. His brother, Alistair Brownlee, is also a triathlon champion, having won the gold medal at the 2012 Olympics.