| Oudenhoorn | |
| Settlement Type: | Village |
| Native Name Lang: | nl |
| Pushpin Map: | Netherlands South Holland#Netherlands |
| Pushpin Label Position: | right |
| Pushpin Mapsize: | 250 |
| Pushpin Map Caption: | Location in the province of South Holland in the Netherlands##Location in the Netherlands |
| Subdivision Type: | Country |
| Subdivision Name: | Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | South Holland |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Voorne aan Zee |
| Elevation Footnotes: | [1] |
| Elevation M: | -0.4 |
| Area Total Km2: | 9.69 |
| Population Footnotes: | [2] |
| Population Total: | 1,225 |
| Population As Of: | 2021 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 3227 |
| Area Code Type: | Dialing code |
| Area Code: | 0181 |
Oudenhoorn is a village in the Dutch province of South Holland. It is part of the municipality of Voorne aan Zee and lies about 3 km east of Hellevoetsluis.
The village was first mentioned in 1356 as "den Hoorn". The current name means "old corner (of a dike)". The eponymous polder was created in 1356 by order of Machteld van Voorne. Oud (old) has been added to distinguish from Nieuwenhoorn.[3]
Oudenhoorn was an independent municipality until 1980 when it was merged into Bernisse. In 2015, it became part of Hellevoetsluis.[4]