Ouderkerk is a former municipality in the western Netherlands, in the province of South Holland. Since 2015 it has been a part of the municipality of Krimpenerwaard. The former municipality covered an area of undefined km2 of which undefined km2 was water. It was formed on 1 January 1985, after a municipal reorganization. The former municipality of Ouderkerk consisted of the population centres Gouderak, Lageweg, Ouderkerk aan den IJssel, and IJssellaan, all situated along the Hollandse IJssel river.

Topography

Dutch Topographic map of the former municipality of Ouderkerk, 2013.