| Oudebildtzijl | |
| Native Name: | Ouwe-Syl |
| Settlement Type: | Village |
| Pushpin Map: | Netherlands Friesland#Netherlands |
| Pushpin Label Position: | bottom |
| Pushpin Mapsize: | 250 |
| Pushpin Map Caption: | Location in the Netherlands |
| Coordinates: | 53.3011°N 5.7183°W |
| Subdivision Type: | Country |
| Subdivision Name: | Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | Friesland |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Waadhoeke |
| Unit Pref: | Metric |
| Area Total Km2: | 16.29 |
| Elevation Footnotes: | [1] |
| Elevation M: | 1.3 |
| Population As Of: | 2021 |
| Population Footnotes: | [2] |
| Population Total: | 950 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 9078 |
| Area Code Type: | Dialing code |
| Area Code: | 0518 |
Oudebildtzijl (pronounced as /nl/; nl|label=[[Bildts]]|Ouwe-Syl; fy|Aldebiltsyl) is a village in Waadhoeke municipality in the province of Friesland, the Netherlands. It had a population of around 690 in January 2017.[3]
It is the starting point from which the Oude Bildtdijk was created. Until 2018, the village was part of the het Bildt municipality.
The village was first mentioned after 1570 as niuwe zijl, and means "sluice in the old Bildt. It refers to a sluice from 1505. In 1600, the Nieuwe Bildtdijk was constructed and oude (old) was added to distinguish from .[4] In 1504, a deal was struck between George, Duke of Saxony and four noblemen from Holland to polder the Middelzee. In 1505, a dike (Oude Bildtdijk) was constructed.[5] The sluice was renewed in 1906.[6]
In 1806, a Mennonite Church was built in Oudebildtzijl. In 1909, the church was enlarged and a clergy house with tower was added to the front. The Juliana tower is in neoclassic style with an open pavilion.[6] The church was decommissioned in 1997, and nowadays serves as visitor centre for the nature area Aerden Plaats.
Oudebildtzijl was home to 604 people in 1840.[7] In 1948, it became a village.[8]