Voorne aan Zee (Dutch pronunciation:[ˈvoːrnəʔaːnˈzeː]) is a municipality on the island of Voorne-Putten in the western Netherlands, in the province of South Holland. The municipality covers an area of 189.82 km2 (73.29 sq mi) of which 67.99 km2 (26.25 sq mi) is water. It had a population of 73,873 in 2022.
The municipality of Voorne aan Zee was formed on 1 January 2023, through the merger of the former municipalities of Brielle, Hellevoetsluis and Westvoorne, which itself was formed on 1 January 1980, through the merger of the former municipalities Oostvoorne and Rockanje.[5]