Gerretsen

Gerretsen, Gerrets and Gerretse are Dutch patronymic surnames. Notable people with this name include:


 * Boris Gerrets (1948–2020), Dutch-born film director
 * Chas Gerretsen (born 1943), Dutch photojournalist
 * John Gerretsen (born 1942), Canadian politician
 * Mark Gerretsen (born 1975), Canadian politician
 * Wolphert Gerretse van Kouwenhoven (1579–1662), Dutch settler in New Netherland known by his patronym Gerretse
 * Grace Gerretsen (born 1998)