This council’s recorded friendship relationships are listed below.
| Partner | Country | Relationship | Since |
|---|---|---|---|
| Brisbane | Australia | Sister city | 1988 |
| Busan | South Korea | Sister city | 1996 |
| Cook Islands | Cook Islands | MOU | 2012 |
| Fukuoka | Japan | Sister city | 1986 |
| Galway | Ireland | Friendly city | 2012 |
| Guangzhou | China | Sister city | 1989-02-17 |
| Hainan | China | MOU | 2024 |
| Kakogawa | Japan | Sister city | 1992 |
| Los Angeles | United States | Sister city | 1972 |
| Nadi | Fiji | MOU | 2006 |
| Ningbo | China | Sister city | 1998-12-02 |
| Pohang | South Korea | Friendly city | 2008 |
| Qingdao | China | Friendly city | 2008-08-09 |
| Samoa | Samoa | MOU | 2012 |
| Shanghai | China | Friendly city | 2012 |
| Shinagawa | Japan | Sister city | 1993 |
| Sichuan | China | MOU | 2024 |
| Taichung | Taiwan Province of China | Sister city | 1996 |
| Tomioka | Japan | Sister city | 1983 |
| Tonga | Tonga | MOU | 2012 |
| Utsunomiya | Japan | Sister city | 1982 |