About Jason Koster
Born 1983. Jason Koster is a New Zealand judoka.
Jason Koster (born 11 March 1983) is a New Zealand judoka. He competed in the men's 100 kg event at the 2014 Commonwealth Games where he won a bronze medal.
Koster is married to the judoka Moira de Villiers. They have a daughter together and he has a son from a previous relationship.
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Important facts
People in Jason Koster's life
Named in this biography and alive at the same time
Related people
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Contemporaries
People whose lives overlapped Jason Koster's
Frequently asked questions
Who is Jason Koster?
New Zealand judoka
When was Jason Koster born?
Jason Koster was born on 11 March 1983 in Burwood.
What is Jason Koster's occupation?
Jason Koster is a judoka.
What nationality is Jason Koster?
Jason Koster is New Zealand.
Sources & further reading
Cite this page
APA: Biography.guide. (2026). Jason Koster. https://biography.guide/jason-koster/
MLA: "Jason Koster." Biography.guide, https://biography.guide/jason-koster/.
Chicago: "Jason Koster." Biography.guide. https://biography.guide/jason-koster/.
Data last updated: 2026-09-20 · Spot an error? Report a correction.
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