Koen Ridder (born 14 March 1985) is a Dutch badminton player.[1] The left handler Ridder, was a part of the Duinwijck badminton club.[2] He won the men's doubles title at the National championships in 2009, 2011, and 2013 partnered with Ruud Bosch.[3] Together with Bosch, they won some international tournaments in Portugal, Belgium, Canada, Slovenia, Norway, Peru and Tahiti. He also played for the Düren 57 club in Germany.[4] His parents, Rob and Marjan Ridder were also professional badminton players and current top veterans.[5]
Koen Ridder was elected vice-chair of the athlete commission of the BWF for a 4-year term in May 2015. In 2017 Ridder was chosen as Chair by his fellow commission members.[6] He achieved his personal best world ranking of 22 in 2013. Koen retired as a professional player in 2014 after representing The Netherlands for more than 10 years at international badminton level.[7]