Koen
People with the given name
- Kōen (1207-1284/5), Japanese busshi during the Kamakura period
- Koen Andries, Belgian scientist
- Koen Barbé (born 1981), Belgian road bicycle racer
- Koen Bauweraerts (born 1983), Belgian hardstyle DJ and producer
- Koen Beeckman (born 1973), Belgian road bicycle racer
- Koen van der Biezen (born 1985), Dutch footballer
- Koen Bouwman (born 1993), Dutch cyclist
- Koen Casteels (born 1992), Belgian footballer
- Koen Crucke (born 1952), Belgian tenor, actor and politician
- Koen Daerden (born 1982), Belgian footballer
- Koen De Bouw (born 1964), Flemish actor
- Koen De Graeve (born 1972), Belgian actor
- Koen de Kort (born 1982), Dutch cyclist
- Koen Decoster, Belgian historian, philosopher and translator
- Koen Geens (born 1958), Belgian Flemish politician
- Koen Heldens (born 1986), Dutch mixing engineer
- Koen Huntelaar (born 1998), Dutch footballer
- Koen Kessels (born c. 1960), Belgian conductor and music director
- Koen Lamberts, Belgian psychologist
- Koen Lenaerts (born 1954), Belgian law scholar and judge
- Koen Naert (born 1989), Belgian long-distance runner
- Koen Olthuis (born 1971), Dutch architect
- Koen Onzia (born 1961), Belgian ballet dancer
- Koen Peeters (born 1959), Belgian writer
- Koen Pijpers (born 1969), Dutch field hockey player
- Koen Ridder (born 1985), Dutch badminton player
- Koen Schockaert (born 1978), Belgian footballer
- Koen Sleeckx (born 1975), Belgian judoka
- Koen Stam (born 1987), Dutch footballer
- Koen Van Langendonck (born 1989), Belgian footballer
- Koen Vandenbempt (born ca. 1970), Belgian organizational theorist
- Koen Vanmechelen (born 1965), Belgian artist
- Koen van de Laak (born 1982), Dutch footballer
- Koen van Nol (born 1974), Dutch judoka
- Koen van Velsen (born 1952), Dutch architect
- Koen Vervaeke (born 1959), Belgian diplomat
- Koen Verweij (born 1990), Dutch speed skater
- Koen Wauters (born 1967), Belgian singer and television presenter
- Koen Weuts (born 1990), Belgian footballer
Fictional characters
- Koen West, protagonist of the Australian television series Cleverman
People with the surname Koen
- Charles Koen (1945–2018), American civil rights activist
- Erwin Koen (born 1978), Dutch footballer
- Fanny Koen, later Fanny Blankers-Koen (1918–2004), Dutch athlete
- J. P. Koen (born 1983), South African rugby player
- Karleen Koen (born 1948), American novelist
- Louis Koen (cricketer) (born 1967), South African cricketer
- Louis Koen (rugby union) (born 1975), South African rugby player
- Martsel Koen (born 1933), Bulgarian sports shooter
- Matilda Koen-Sarano (born 1939), Israeli writer
- Rik Koen (born 2004), Dutch racing driver
- Shaun Koen (born 1970), South African professional wrestler
- Sias Koen (born 1994), South African rugby player
- Tyron Koen (born 1997), South African cricketer
People with the surname Kōen