Coat of arms of Oldenburg
| Coat of arms of the Grand Duchy of Oldenburg | |
|---|---|
| Versions | |
Heraldic shield of the arms |
The coat of arms of Oldenburg is the coat of arms associated with the state of Oldenburg, a county, duchy, and then grand duchy that existed between 1101 and 1918. The arms are often associated with the parts of the House of Oldenburg that ruled the state.