Oud-Beijerland is a town and former municipality in the western Netherlands, in the province of South Holland, now a part of the Hoeksche Waard municipality. With a population of 24,575 in 2020, it is the most populous town of the Hoeksche Waard island. The town is located adjacent to the confluence of the Oude Maas and Spui River.

Hoeksche Waard is a municipality in the western Netherlands, in the province of South Holland, consisting of the eponymous Hoeksche Waard and Tiengemeten islands.