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A list of the historical capitals of the Kingdom of Norway . According to the Great Norwegian Encyclopedia , "the kingdom had too few centralizing institutions to have any real "capital" in the early Middle Ages". [1]
| Original city name | Standardization | Current city name | From | To | Historical states | Notes | 
|---|---|---|---|---|---|---|
| Ǫgvaldsnes (Nominally) | — | Avaldsnes | 872 | 997 | Kingdom of Norway (1) | Unified from the petty kingdoms of Norway to a single Kingdom of Norway, which had no clear or single capital. However, it's believed that Norway's oldest royal residence and seat of power was at the Avaldsnes Kongsgård estate. [2] | 
| Niðaróss | Nidaros | Trondheim (1) | 997 | 1016 | Founded by Olav Tryggvason. | |
| Borg | Ditto | Sarpsborg | 1016 | 1028 | Founded by St. Olaf in 1016. [1] | |
| Niðaróss | Nidaros | Trondheim (2) | 1028 | 1067 | The capital was moved to Bergen. Seat of power was originally at Alrekstad Kongsgård estate. Moved to Holmen in 1110 c. | |
| Biorgvin | Bjørgvin | Bergen (1) | 1067 | 1123 | The capital was moved to Konghelle. | |
| Konungahella | Konghelle | Kungahälla (in Swedish) | 1123 | 1150 c. | Sigurd the Crusader royal residence after his return from Byzantium. | |
| Niðaróss | Nidaros | Trondheim (3) | 1150 | 1217 | The capital was moved to Trondheim for the last time | |
| Biorgvin | Bjørgvin | Bergen (2) | 1217 | 1299 | The capital was moved to Oslo. [3] [4] [5] | |
| Ósló | Oslo | Oslo (1) | 1299 [6] | 1537 | Kingdom of Norway (1) | The dean at St. Mary's Church became realm chancellor. | 
| Kalmar Union (United Kingdoms of Denmark-Norway-Sweden) | ||||||
| United Kingdoms of Denmark–Norway | ||||||
| København (Denmark) | Ditto | Copenhagen (in English) | 1537 | 1814 | Kingdom of Denmark–Norway | The Norwegian Council of the Realm was abolished, and the national board of directors subject to the Danish Council of the Realm in Denmark. | 
| Christiania (Before 1877) Kristiania (1877-1924) Oslo (From 1924) | Kristiania | Oslo (2) | 1814 | Current | Kingdom of Norway (2) | Norway became its own state again, in a union with Sweden, and fully separate in 1905. | 
| Ditto | United Kingdoms of Sweden-Norway | |||||
| Ditto | Kingdom of Norway (3) |