Hellevoetsluis

Hellevoetsluis
City
Flag Coat of arms
Location in South Holland
Coordinates: 51°49′N 4°8′E / 51.817°N 4.133°E / 51.817; 4.133
Country	Netherlands
Province	South Holland
Municipality	Voorne aan Zee
Area [1]
• Total	61.20 km2 (23.63 sq mi)
• Land	41.10 km2 (15.87 sq mi)
• Water	20.10 km2 (7.76 sq mi)
Elevation [2]	2 m (7 ft)
Population  (January 2021)[3]
• Total	40,312
• Density	981/km2 (2,540/sq mi)
Demonym	Hellevoeter
Time zone	UTC+1 (CET)
• Summer (DST)	UTC+2 (CEST)
Postcode	3220–3225
Area code	0181
Website	www.hellevoetsluis.nl

Hellevoetsluis (Dutch pronunciation: [ˌɦɛləvutˈslœys] ^ⓘ) is a town in the western Netherlands. It is located in Voorne-Putten, South Holland. The former municipality covered an area of 61.20 km² (23.63 sq mi) of which 20.10 km² (7.76 sq mi) was water and it included the population centres of Nieuw-Helvoet, Nieuwenhoorn, and Oude en Nieuwe Struiten, all former municipalities.

Hellevoetsluis is located on the Haringvliet with the sea, beach, and dunes close by, on the extreme southern edge of the Rijnmond and Europoort areas, close to the broad Zeeland landscape. The name translates as "lock at the foot of the Helle". The Helle was a small local river that disappeared over time.

On 1 January 2023, the municipality of Hellevoetsluis merged with Brielle and Westvoorne into the new municipality of Voorne aan Zee.