| Coordinates: | 53.6°N 38°W |
| Image Plan: | Ochtersum in WTM.svg |
| State: | Niedersachsen |
| District: | Wittmund |
| Samtgemeinde: | Holtriem |
| Elevation: | 5 |
| Area: | 10.82 |
| Postal Code: | 26489 |
| Area Code: | 0 49 75 |
| Licence: | WTM |
| Gemeindeschlüssel: | 03 4 62 012 |
| Mayor: | Franz Pfaff |
| Party: | FWG |
Ochtersum is a municipality in the district of Wittmund, in Lower Saxony, Germany.