| Seoul Special City |
Beijing City |
Tokyo Metropolis |
1995 |
sister cities |
| Gyeonggi Province |
Liaoning Province |
Kanagawa Prefecture |
1996 |
sister/friendship cities |
| South Gyeongsang Province |
Shandong Province |
Yamaguchi Prefecture |
1997 |
sister cities |
| South Jeolla Province |
Yangzhou City |
Karatsu City |
1999 |
friendship/sister cities |
| North Jeolla Province |
Jiangsu Province |
Ishikawa Prefecture |
2003 |
sister/friendship cities |
| Gangwon Province |
Jilin Province |
Tottori Prefecture |
2008 |
sister cities |
| Incheon Metropolitan City |
Dalian City |
Kitakyushu City |
2010 |
friendship/sister cities |
| Gunpo City |
Linyi City |
Atsugi City |
2010 |
sister cities |
| Jeonju City |
Suzhou City |
Kanazawa City |
2010 |
sister cities |
| Jungnang District, Seoul Special City |
Dongcheng District, Beijing City |
Meguro Ward, Tokyo Metropolis |
2017 |
friendship/sister cities |
| Busan Metropolitan City |
Shanghai City |
Nagasaki Prefecture |
2018 |
sister/friendship cities |
| Changnyeong Country, South Gyeongsang Province |
Hanzhong City |
Sado City |
2019 |
friendship cities |
| North Gyeongsang Province |
Shaanxi Province |
Ehime Prefecture |
2019 |
sister cities |
