'''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)
==See also== *Gerritsen
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Category:Dutch patronymic surnames Category:Surnames derived from given names