Hendrik-Ido-Ambacht is a town and municipality in the western Netherlands. It is located on the island of IJsselmonde, and borders with Zwijndrecht, Ridderkerk, and the Noord River.

Ridderkerk is a town and municipality in the western Netherlands, in the province of South Holland. The municipality had a population of 46,671 in 2021 and covers an area of 25.26 km2 (9.75 sq mi) of which 1.54 km2 (0.59 sq mi) is covered by water.