Manus Boonjumnong (Thai: มนัส บุญจำนงค์; RTGS: Manat Bunchamnong, born June 23, 1980) is a Thai boxer who won the Olympics at Light Welterweight (60–64 kg) at the 2004 Summer Olympics . He is the older brother of Non Boonjumnong.
At the 2003 World Amateur Boxing Championships in his home town Bangkok, the light-footed counterpuncher won the bronze medal losing to Russian Alexander Maletin.
In 2006, he made a successful comeback when he was crowned Asian champion. He narrowly defeated reigning 2005 world champion Serik Sapiyev at the tournament although he was knocked down.
In Chicago at the 2007 World Amateur Boxing Championships, he was upset early against Japanese Masatsugu Kawachi.
Boonjumnong qualified for the Athens Games by ending up in first place at the 1st AIBA Asian 2004 Olympic Qualifying Tournament in Guangzhou, PR China. In the final he defeated Kazakhstan's Nurzhan Karimzhanov. In Athens he beat reigning world champion Willy Blain and the Cuban Yudel Johnson in the final and won gold.
2004 Olympic Results