This is a list of places in South Korea which have standing links to local communities in other countries. In most cases, the association, especially when formalised by local government, is known as "town twinning" (usually in Europe) or "sister cities" (usually in the rest of the world).
Anshan, China
Kholmsk, Russia
Las Vegas, United States Yuzhno-Sakhalinsk, Russia Anyang, China Garden Grove, United States Hampton, United States
Komaki, Japan
Naucalpan de Juárez, Mexico
Sorocaba, Brazil Tokorozawa, Japan Ulan-Ude, Russia Weifang, China Fujisawa, Japan Hangu (Tianjin), China Qingpu (Shanghai), China Shoreline, United States Takahama, Japan Wulong (Chongqing), China Bakersfield, United States Harbin, China Khabarovsk, Russia
Valenzuela, Philippines
Auckland, New Zealand
Barcelona, Spain
Casablanca, Morocco Cebu, Philippines Chicago, United States
Dubai, United Arab Emirates Fukuoka, Japan
Ho Chi Minh City, Vietnam
Istanbul, Turkey
Kaohsiung, Taiwan Los Angeles, United States
Montreal, Canada
Mumbai, India
Phnom Penh, Cambodia Rio de Janeiro, Brazil Saint Petersburg, Russia Shanghai, China Shimonoseki, Japan
Surabaya, Indonesia
Thessaloniki, Greece Tijuana, Mexico
Valparaíso, Chile
Victoria (state), Australia Vladivostok, Russia
Western Cape, South Africa
Yangon, Myanmar Annapolis, United States Da Nang, Vietnam Guadalajara, Mexico Himeji, Japan Jacksonville, United States Jersey City, United States Kure, Japan Ma'anshan, China Mỹ Tho, Vietnam Nantong, China Shulan, China Ussuriysk, Russia Viña del Mar, Chile Yamaguchi, Japan Zapopan, Mexico Beaverton, United States Büyükçekmece, Turkey Shijiazhuang, China Wendeng (Weihai), China Nenjiang, China Bellingham, United States Tottori, Japan Wuhan, China Đồng Tháp, Vietnam
Addis Ababa, Ethiopia Higashichikuma District, Japan Hōfu, Japan Kakamigahara, Japan Bacolod, Philippines Hexi (Tianjin), China Keqiao (Shaoxing), China Bình Dương, Vietnam Brisbane, Australia Calgary, Canada Durban, South Africa Guadalajara, Mexico Montgomery County, United States Nanjing, China Novosibirsk, Russia Ōda, Japan Sapporo, Japan Seattle, United States Shenyang, China
Uppsala, Sweden Xigang (Dalian), China Rizhao, China Snohomish County, United States Bolu, Turkey Federal Way, United States Haikou, China Jiamusi, China Nakhodka, Russia Saint John, Canada Tsuruga, Japan Tumen, China
Eisenstadt, Austria Hakodate, Japan
Heerhugowaard, Netherlands Loudoun County, United States Maui County, United States Qiqihar, China San Bernardino, United States Jamshedpur, India Pimpri-Chinchwad, India Tacoma, United States Windsor, Canada Yantai, China Calamba, Philippines Carrollton, United States Burlington, United States Nanning, China Shirahama, Japan Jōyō, Japan Xihai'an (Qingdao), China Little Rock, United States Rushan, China
Shah Alam, Malaysia
Sanary-sur-Mer, France Jingdezhen, China Kōka, Japan Limoges, France Santa Fe, United States Seto, Japan Culver City, United States
Odense, Denmark Zhenjiang, China
Alexandria, Egypt Anchorage, United States Banten, Indonesia Burbank, United States Chongqing, China Haiphong, Vietnam Honolulu, United States Kitakyushu, Japan Kobe, Japan Kolkata, India Manila, Philippines Mérida, Mexico
Panama City, Panama Philadelphia, United States Phnom Penh, Cambodia Shenyang, China
Tel Aviv, Israel
Ulaanbaatar, Mongolia
Veneto, Italy Vladivostok, Russia Yekaterinburg, Russia Battambang, Cambodia Vũng Tàu, Vietnam Yancheng, China Acheng (Harbin), China Bacoor, Philippines Changxing, China Claver, Philippines Haiyan, China Washington County, United States Nanping, China Ōmihachiman, Japan Yasugi, Japan Beppu, Japan
Hammerfest, Norway Lianyungang, China Xiamen, China Changzhou, China
Dartford, England, United Kingdom Kampong Cham, Cambodia Vinh, Vietnam Coquitlam, Canada Cuenca, Spain Eskişehir, Turkey Hadano, Japan Jinzhou, China Mudanjiang, China Rancagua, Chile Sasebo, Japan Stellenbosch, South Africa Toowoomba, AustraliaSejong has no sister cities. [64]
Aurora, United States Piracicaba, Brazil Shenyang, China Ankara, Turkey
Astana, Kazakhstan Athens, Greece
Bangkok, Thailand Beijing, China
Bogotá, Colombia Cairo, Egypt Hanoi, Vietnam Honolulu, United States Jakarta, Indonesia Mexico City, Mexico Moscow, Russia New South Wales, Australia San Francisco, United States São Paulo, Brazil Taipei, Taiwan
Tashkent, Uzbekistan Tokyo, Japan Ulaanbaatar, Mongolia
Warsaw, Poland Washington, D.C., United States Changping (Beijing), China Canterbury, Australia Fengtai (Beijing), China Musashino, Japan Qinhuangdao, China Segovia, Spain Songino Khairkhan (Ulaanbaatar), Mongolia Tangshan, China Willoughby, Australia Chaoyang (Beijing), China Grand Rapids, United States [73] Gwinnett County, United States Licheng (Jinan), China Riverside, United States
Woluwe-Saint-Pierre, Belgium Zhongshan (Dalian), China Changning (Shanghai), China Otaru, Japan Penrith, Australia Tarlac City, Philippines Zhaoyuan, China Daxing (Beijing), China Hohhot, China Kingston upon Thames, England, United Kingdom Tiexi (Shenyang), China Yanji, China Ereğli, Turkey Khan Uul (Ulaanbaatar), Mongolia
Prague 1 (Prague), Czech Republic Dongcheng (Beijing), China
Kazanlak, Bulgaria Meguro (Tokyo), Japan Katsushika (Tokyo), Japan Shijingshan (Beijing), China Cuauhtémoc (Mexico City), Mexico Irvine, United States Laoshan (Qingdao), China Manhattan (New York), United States Perth, Australia Şişli, Turkey South-Western AO (Moscow), Russia Suginami (Tokyo), Japan
Asunción, Paraguay Chaoyang (Beijing), China Chingeltei (Ulaanbaatar), Mongolia Christchurch, New Zealand Fairfax County, United States Karaganda, Kazakhstan Minhang (Shanghai), China Panyu (Guangzhou), China
Steglitz-Zehlendorf (Berlin), Germany Tonghua, China Bankstown, Australia Chaoyang (Changchun), China Nakano (Tokyo), Japan Kishiwada, Japan Mentougou (Beijing), China Monterey Park, United States Granbury, United States Asahikawa, Japan Bandung, Indonesia
Cluj-Napoca, Romania Curitiba, Brazil Fez, Morocco Freiburg im Breisgau, Germany Hải Dương, Vietnam Jinan, China Nizhny Novgorod, Russia Siem Reap, Cambodia Toluca, Mexico Townsville, Australia Yalova, Turkey Kimitsu, Japan North Little Rock, United States Xianning, China Imari, Japan Lianyun (Lianyungang), China Rongcheng, China Chizu, Japan Jianli, China Saint-Mandé, France Dongying, China Fujieda, Japan Henrico County, United States Daisen, Japan Rokkasho, Japan Xiangzhou (Xiangyang), China Bozhou, China Fujinomiya, Japan Jining, China Nantou, Taiwan Shaoguan, China Knoxville, United States Fergana Region, Uzbekistan Fullerton, United States Kayseri, Turkey Kota Kinabalu, Malaysia Yangzhou, China
South Korea maintains diplomatic relations with 191 countries. The country has also been a member of the United Nations since 1991, when it became a member state at the same time as North Korea. South Korea has also hosted major international events such as the 1988 Summer Olympics and 2002 World Cup Football Tournament and the 2011 IAAF World Championships Daegu South Korea. Furthermore, South Korea had hosted the 2018 Winter Olympics which took place in Pyeongchang, South Korea from 9 to 25 February.
Daejeon is South Korea's fifth-largest metropolis, with a population of 1.5 million as of 2019. Located in a central lowland valley alongside forested hills and the Geum River, the city is known for its technology and research institutions, and for celebrating its natural environment, with most mountains, hot springs, and rivers freely open for public use. Daejeon serves as a hub of transportation for major rail and road routes, and is approximately 50 minutes from the capital, Seoul, by KTX or SRT high speed rail.
Wonju is the most populous city in Gangwon Province, South Korea, with a population of 364,860 as of 2023. The city is located approximately 140 kilometres (87 mi) east of Seoul. During the time of Great Joseon, Wonju was the capital of the historic Gangwon Province, one of the Eight Provinces of Korea. It was the site of three crucial battles during the Korean War.
