Oudesluis is a village in the Dutch province of North Holland. It is a part of the municipality of Schagen, and lies about 21 km south of Den Helder. The village was first mentioned around 1660 as Duycker Sluys. The current name means "old sluice". Oude has been added after the Wieringerwaard was poldered to distinguish from Nieuwesluis. Oude Sluis was located on the former Zuiderzee until 1845.