Koo Kien Keat
 Koo Kien Keat (born September 18 1985 in Ipoh Perak) is a professional badminton player from Malaysia. Besides being a men's doubles player he also represents Malaysia in the mixed doubles event. He started his career at seventeen years of age and has won the Asian Junior title. He played in the Thomas Cup 2004 with Chan Chong Ming. They won bronze in the World Championship 2005.