Stefan Casteleyn
| Country | Belgium | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Born | February 25, 1974 Brussels, Belgium  | ||||||||||||||
| Residence | Los Angeles, United States | ||||||||||||||
| Turned pro | 1993 | ||||||||||||||
| Retired | October 2015 | ||||||||||||||
| Plays | Right Handed | ||||||||||||||
| Racquet used | Feather | ||||||||||||||
| Men's singles | |||||||||||||||
| Highest ranking | No. 7 (December, 1999) | ||||||||||||||
Medal record 
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| Updated on December 22, 2009. | |||||||||||||||
Stefan Casteleyn (born February 25, 1974, in Brussels) is a professional squash player who represented Belgium. He is the 1998 Men's World Open Squash Championships bronze medalist. He reached a career-high world ranking of World No. 7 in December 1999.
He married fellow Belgian squash player Kim Hannes in 2014.