Koolwijk may refer to:
Koolwijk, North Brabant, a village in the Netherlands; see Ravenstein, Netherlands Koolwijk, South Holland, a village in the Netherlands Ryan Koolwijk (born 1985), Dutch footballer
See also Kooiwijk, a hamlet in Molenlanden, South Holland, Netherlands Kootwijk, Barneveld, Gelderland, Netherlands