Tags: Swimmer.
Jonathan (Jon) Scott Sieben OAM (born 24 August 1966) is an Australian former butterfly swimmer active in the 1980s who won gold in the 200 m butterfly at the 1984 Los Angeles Olympics.Hailing from Brisbane Queensland Sieben was coached by Laurie Lawrence and made his debut at the young age of 15 at the Brisbane 1982 Commonwealth Games where he captured a bronze in the 200 m butterfly as well as gold in the medley relay.