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City Diplomacy

Expanding urban diplomacy
by forming sister and friendship city relationships with more cities

As of March 2017, the Seoul Metropolitan City has formed sister city or friendship city relationships with 57 cities worldwide. Starting with a sister city relationship with Taipei in 1968, the SMG concluded sister city agreements with 23 cities including Washington D.C. (U.S.), Tokyo (Japan), Beijing (China), Paris (France), and Moscow (Russia). Starting with a friendship city agreement with Ottawa (Canada) in 1997, the SMG concluded friendship city relationships with 35 cities including Los Angeles (U.S.), Shanghai (China), Ho Chi Minh (Vietnam), and Milan (Italy).

Through active diplomatic efforts of the 5th and 6th SMGs, the number of sister cities and friendship cities has rapidly increased. For the past five years (2012-2016), the SMG has formed new sister city and friendship city relationships with 18 cities, accounting for 32% of the total number of its sister and friendship cities.


< Sister and friendship cities of the Seoul Metropolitan Government >

(As of March 2017)

Sister and friendship cities of the Seoul Metropolitan Government
NationSister cities (23)Friendship cities (35)
U.S. (5)Washington D.C., Honolulu, San FranciscoLos Angeles, Houston
China (9)Beijing, Taipei (Taiwan)Shandong, Jiangsu, Guangdong, Zhejiang, Tianjin,
Shanghai, Sichuan
Japan (2)TokyoHokkaido
Jakarta (Indonesia), Ulaanbaatar (Mongolia), Hanoi (Vietnam), Astana (Kazakhstan), Tashkent (Uzbekistan), Bangkok (Thailand)Vientiane (Laos), Colombo (Sri Lanka), Kathmandu (Nepal), Bandung (Indonesia), Ho Chi Minh (Vietnam)
Ankara (Turkey), Moscow (Russia), Warsaw (Poland), Rome (Italy), Athens (Greece), Paris (France),London (U.K.), Berlin (Germany), Copenhagen/Odense (Denmark), Amsterdam (Netherlands), Budapest (Hungary), Minsk (Belarus), Bucharest (Romania), Istanbul (Turkey), Milan (Italy), Barcelona (Spain), Brussels (Belgium)
Oceania (2)New South Wales (Australian State)Wellington (New Zealand)
Africa (4)Cairo (Egypt)Addis Ababa (Ethiopia), Maputo (Mozambique), City of Tshwane (South Africa)
North/South America
Bogota (Colombia), Mexico City (Mexico), Sao Paulo (Brazil)Ottawa/Montreal (Canada), Buenos Aires (Argentina), Administrative regions of the Federal District (Brazil)

International Organizations leading global agendas

Starting with its entry into the Pacific Asia Travel Association (PATA) in 1970, the Seoul Metropolitan Government has joined 17 international organizations as of March 2017. In particular, the SMG took the lead in establishing the World e-Governments Organization of Cities and Local Governments (WeGO) and the Global Social Economy Forum (GSEF) and has been serving as the president city of CITYNET for livable communities and the International Council for Local Environmental Initiatives (ICLEI) for sustainability. The SMG has been taking initiative in global issues and agendas including climate change and the social economy by launching the Promise of Seoul (April 2015) at the ICLEI World Congress held in Seoul and announcing the Seoul Declaration (November 2013) at the GSEF.

Furthermore, the SMG has been growing as a global city by inviting influential international organizations to Seoul.

As of March 2017, a total of 30 international organizations are situated in Seoul. As a result of designating the Global Center Building as an exclusive facility for international organizations and making proactive efforts to invite international organizations to Seoul by revising its ordinances and establishing various support systems, the SMG has invited 14 new international organizations, accounting for 50% of the total number of international organizations in Seoul, in the past five years (2012-2016).

< International organizations in Seoul >

(As of March 2017)

Sister and friendship cities of the Seoul Metropolitan Government
Intergovernmental organizations (16)16 organizations including the International Vaccine Institute Headquarters, the United Nations High Commissioner for Refugees Representation in the Republic of Korea, OECD Korea Policy Centre, UNESCO Seoul Office, Inaugural Congress of the Association of Asian Constitutional Courts & Equivalent Institutions, etc.
Quasi-governmental organizations (7)7 organizations including WeGO Headquarters, Trans-Eurasia Information Network, ICLEI East Asia Secretariat, CITYNET Headquarters, Headquarters Metropolis International Institute Seoul Headquarters, etc.
International NGOs (7)7 organizations including International Bar Association Asia Office, Seoul International Dispute Resolution Center, World Wide Fund For Nature Korea Branch, Karl Polanyi Institute of Political Economy, World Federation of United Nations Associations Seoul Office, etc.


< International Organizations Joined by Seoul >

(As of March 2017)

International organizations joined by Seoul
(Cities and groups).
1Pacific Asia Travel Association
73 branches
About 1,000 members
Develop the tourism business and create added values in the Asia Pacific regionJoined in 1970
2World Association of the major Metropolises
171 cities and groups (Paris, Berlin, Cairo, etc.)Develop the economy of metropolises and improve the quality of lifeJoined in 1987
A member of the executive committee
3CITYNET for livable communities130 cities and groups from 24 countriesEfficiently develop cities and guarantee livable communities through cooperation between cities, local governments, and NGOs in the Asia-Pacific regionJoined in 1989
4United Cities and Local Governments
About 1,000 cities and groups (Barcelona, Beijing, Bangkok, etc.)Improve civil service of local governments, enhance the residential environment, and support the local economyJoined in 1998
A member of the executive committee and an executive member of the Asia-Pacific Region
5International Council for Local Environmental Initiatives (ICLEI)
for sustainability
1,078 cities and groups from 67 countries (LA, New York, Berlin, Rome, etc.)Protect the global environment and aim for sustainable developmentJoined in 1999
6The Asian Network of Major Cities 21
13 cities (Tokyo, Delhi, Singapore, etc.)Aim for win-win growth of metropolises through a cooperative system between Asian metropolisesJoined in 2001
7The International Association of Public Transport
About 90 countries / 2,900 members (Hong Kong, Singapore, etc.)Provide quality public transportation services by exchanging research, information, and technology on public transportation between membersJoined in 2005
8The C40 Cities Climate Leadership Group
(C40 Climate Leadership
40 members and 19 participantsCooperatively cope with global climate change and promote businesses related to climate changeJoined in 2006
Vice Chair
9Lighting Urban Community International
Member cities: 71 members
Associated members: 52 companies
Share excellent cases to apply advanced urban lighting systems across the worldJoined in 2007
10Global Design Cities Organization
26 cities (Ankara, Yangzhou, Bangkok, etc.)Develop and share experiences and policies related to urban development and designJoined in 2011
the Creative Cities Network
116 Cities (7 fields / Beijing, Sydney, etc.)Promote the diversity of global cultures by developing creative, social, and economic possibilities in cultural businessJoined in 2010
12World e-Governments Organization of Cities and Local Governments
72 member citiesAim for sustainable development and share excellent cases of e-governments through international exchange and cooperationFounded and joined in 2010
13World Tourism Cities Federation
A total of 168 members (113 cities and 55 groups)Promote economic and social development of world tourism cities and expand upon exchange through promotion of tourismJoined in 2012
14Union of International Associations (UIA)6,000 organizations and associations all over the worldEstablish information data on international organizations and associations, exchange information between members, and construct a PR frameworkJoined in 2012
15World Cities Culture Forum
32 cities (London, Moscow, Shanghai, etc.)Intercity policy network for exchanging information related to cultural policies between major citiesJoined in 2013
16UN Global Compact
78 local governments (San Francisco, etc.)Sustainable and balanced development of the global economy through a UN-companies partnershipJoined in 2014
17Global Social Economy Forum Secretariat
31 cities and groups (Montreal, Bilbao, etc.)Systematically develop the society and economy and solve social issues through international cooperation between private organizations and local governmentsFounded and joined in 2014