Tallinn has cooperative relationships with 21 cities around the world
| Annapolis (USA) | Beijing (China) |
| Berlin (Germany) | St. Petersburg (Russia) |
| Chengdu (China) | Riga (Latvia) |
| Hangzhou (China) | Schwerin (Germany) |
| Helsinki (Finland) | Soul |
| Kiel (Germany) | Stockholm (Sweden) |
| Kiev (Ukraine) | Thbilisi |
| Kotka (Finland) | Turku (Finland) |
| Moscow (Russia) | Venice (Italy) |
| Odessa (Ukraine) | Vienna (Austria) |
| Vilnius (Lithuania) |