Ki Sung-yueng (born 1989) is a South Korean association football player. He was born in Gwangju on 24 January 1989.
Ki competed in association football as a midfielder. The clubs and national sides on that record are FC Seoul (2006–2009), 60 appearances and 7 goals, Swansea City A.F.C. (2012–2018), 139 appearances and 12 goals, Celtic F.C. (2009–2012), 66 appearances and 9 goals, Sunderland A.F.C. (2013–2014), 27 appearances and 3 goals and the South Korea national under-17 football team (in 2004), 6 appearances and 3 goals. That career was played out in Premier League. He had begun working by 2006.
Ki appeared at the 2012 Summer Olympics, the 2008 Summer Olympics, the 2014 FIFA World Cup and the 2010 FIFA World Cup. He studied at Kyonggi University.
Ki married Han Hye-jin.
The 2012 Summer Olympics were held in London, the United Kingdom.
Ki Sung-yueng is covered in 43 language editions of Wikipedia, a rough measure of how far the name has carried beyond South Korea.

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