Nyssen

Nyssen is a surname. Notable people with the surname include:


 * Françoise Nyssen (born 1951), French-Belgian publisher and politician
 * Gregory Nyssen also known Gregory of Nyssa (c. 335–c. 395), was bishop of Nyssa from 372 to 376 and from 378 until his death
 * Guillaume Nyssen (1886 –date of death unknown), Belgian racing cyclist
 * Hubert Nyssen (1925–2011), Belgian-French writer, publisher and founder of the Éditions Actes Sud
 * Jan Nyssen (born 1957), Belgian physical geographer