| Onderdendam | |
| Settlement Type: | Village |
| Pushpin Map: | Netherlands Groningen#Netherlands |
| Pushpin Mapsize: | 250 |
| Pushpin Map Caption: | Location in the province of Groningen in the Netherlands |
| Coordinates: | 53.3333°N 41°W |
| Subdivision Type: | Country |
| Subdivision Name: | Netherlands |
| Subdivision Type1: | Province |
| Subdivision Name1: | Groningen |
| Subdivision Type2: | Municipality |
| Subdivision Name2: | Het Hogeland |
| Unit Pref: | Metric |
| Area Total Km2: | 6.00 |
| Elevation Footnotes: | [1] |
| Elevation M: | 0.2 |
| Population As Of: | 2021 |
| Population Footnotes: | [2] |
| Population Total: | 575 |
| Population Density Km2: | auto |
| Timezone: | CET |
| Utc Offset: | +1 |
| Timezone Dst: | CEST |
| Utc Offset Dst: | +2 |
| Postal Code Type: | Postal code |
| Postal Code: | 9959 |
| Area Code Type: | Dialing code |
| Area Code: | 050 |
Onderdendam is a village in Het Hogeland municipality in the province of Groningen, the Netherlands. It had a population of around 575 in 2021.[2]
The village is first mentioned in 1252 as "et ulderna domme". Even though it seemingly translates to "below the dam", the etymology is unclear.[3] Onderdendam developed in the 16th and 17th century at the intersection of land- and waterways. In 1653, the Boterdiep was built which further enhanced its position, and it became a village of warehouses and traders.[4]
The Dutch Reformed church is a small domed church built in 1840 as a replacement of the church of .[4] The court house was built in 1804 as a wide white plastered building on the main street. Later it became an inn.
In 1811, Onderdendam became the capital of the municipality Bedum.[4] Onderdendam was home to 498 people in 1840.[5] Around 1900, Bedum started to outgrow Onderdendam.[4]
Onderdendam was part of the municipality of Bedum until 2019 when it became part of the municipality of Het Hogeland.[5]