| Oldenzijl | |
| Settlement Type: | Village |
| Native Name Lang: | nl |
| Pushpin Map: | Netherlands Groningen#Netherlands |
| Pushpin Label Position: | left |
| Pushpin Mapsize: | 250 |
| Pushpin Map Caption: | Location of Oldenzijl in the province of Groningen |
| Coordinates: | 53.4°N 49°W |
| Subdivision Type: | Country |
| Subdivision Name: | Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | Groningen |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Het Hogeland |
| Area Total Km2: | 0.18 |
| Elevation Footnotes: | [1] |
| Elevation M: | 0.8 |
| Population As Of: | 2021 |
| Population Footnotes: | [2] |
| Population Total: | 60 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 9986 |
| Area Code Type: | Dialing code |
| Area Code: | 0595 |
Oldenzijl is a small village in Het Hogeland municipality in the Dutch province of Groningen. It had a population of around 45 in January 2017.[3]
It was part of Uithuizermeeden municipality before 1979, when it became part of Hefshuizen.