Ouderkerk
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 of which 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.