Sister cities
Twinned with Oslo
12 of 21 in this atlas
Oslo maintains formal ties with a range of municipalities across Europe, North America, and Asia, including Belgrade, Copenhagen, Helsinki, Kyiv, London, New York City, Reykjavík, Saint Petersburg, Shanghai, Vilnius, and Warsaw, all mutual pairings. Washington also names Oslo as a twin, though Oslo does not return the designation in this atlas, making it a one-sided link within an otherwise reciprocal set.
In this atlas12
Twinned in total21
Not reciprocated1
Twinned with Oslo
| City | Country | Distance | Lists back |
|---|---|---|---|
| Belgrade | RS | 1,801 km | yes |
| Copenhagen | DK | 483 km | yes |
| Helsinki | FI | 787 km | yes |
| Kyiv | UA | 1,627 km | yes |
| London | GB | 1,153 km | yes |
| New York City | US | 5,915 km | yes |
| Reykjavík | IS | 1,745 km | yes |
| Saint Petersburg | RU | 1,086 km | yes |
| Shanghai | CN | 8,087 km | yes |
| Vilnius | LT | 1,045 km | yes |
| Warsaw | PL | 1,063 km | yes |
| Washington | US | 6,233 km | not listed |
1 of these do not list Oslo back. Twinning is declared independently by each municipality, so one-sided pairs are common — and usually more interesting than the mutual ones.