The Hofje van Willem Heythuijsen is a hofje in Haarlem, Netherlands. It was founded in 1650 by the testament of Willem van Heythuysen (sometimes spelled Heijthuijsen) on the site of his summer residence outside the city walls of Haarlem on land that was considered Heemstede property until it was annexed in 1927. It is one of the few hofjes of Haarlem to be built outside the city walls.