The Retie watermill is an unnamed watermill on the Witte Nete, located a few kilometres southwest of the village centre of Retie. It is an undershot mill from 1765, housed in a rectangular stone building with a tent roof, covered with slates.
The first watermill on this site was probably built by the Corbie Abbey. The abbey in question already had extensive possessions in this region in 775 and 825. The first mention of a watermill dates from 1134, when the mill was owned by the Berthout van Grimbergen family. It was a ban mill. The mill also appeared in written documents in 1533.
In 1658, a new wooden building was erected, which was replaced by a stone building in 1765. Until 1795, the mill, together with the nearby Grote Hoeve, remained the property of the lords of the Retie estate. Then the estate was abolished and the mill was no longer a ban mill. However, it remained the property of noblemen, who leased it to a miller. In 1912, it was sold by Baron Du Four from Turnhout to miller Jan Quets. Ultimately, the mill remained in operation until 1970. In 1975, the mill and its surroundings were classified as a protected village view. Restoration followed in 2000, when the roof, covered with eternit, was again provided with slates. In 2007, a fish ladder was constructed.
At the mill is a junction of hiking trails over the Kempense Heuvelrug.