Coordinates: 50°52′34.16″N 4°25′19.24″E / 50.8761556°N 4.4220111°E / 50.8761556; 4.4220111

The Shanghai Cooperation Organisation or SCO (simplified Chinese: 上海合作组织; traditional Chinese: 上海合作組織; pinyin: Shànghǎi Hézuò Zǔzhī; Russian: Шанхайская организация сотрудничества), is an intergovernmental mutual-security organisation which was founded in 2001 in Shanghai by the leaders of China, Kazakhstan, Kyrgyzstan, Russia, Tajikistan, and Uzbekistan. Except for Uzbekistan, the other countries had been members of the Shanghai Five, founded in 1996; after the inclusion of Uzbekistan in 2001, the members renamed the organisation.

The official working languages of the Shanghai Cooperation Organisation are Chinese and Russian. The official names of the organisation in the two languages, abbreviations in parentheses, are:

Chinese:

Russian:

Member States

The Shanghai Five grouping was originally created April 26, 1996 with the signing of the Treaty on Deepening Military Trust in Border Regions in Shanghai by the heads of states of Kazakhstan, the People's Republic of China, Kyrgyzstan, Russia and Tajikistan. April 24, 1997 the same countries signed the Treaty on Reduction of Military Forces in Border Regions in a meeting in Moscow.

Shanghai is the largest city by population of the People's Republic of China (PRC) and the largest city proper by population in the world. It is one of the four province-level municipalities of the PRC, with a total population of over 23 million as of 2010. It is a global city, with influence in commerce, culture, finance, media, fashion, technology, and transport. It is a major financial center and the busiest container port in the world.

Located in the Yangtze River Delta in eastern China, Shanghai sits at the mouth of the Yangtze River in the middle portion of the Chinese coast. The municipality borders Jiangsu and Zhejiang Provinces to the west, and is bounded to the east by the East China Sea.

Once a fishing and textiles town, Shanghai grew in importance in the 19th century due to European recognition of its favorable port location and economic potential. The city was one of several opened to foreign trade following the British victory over China in the first opium war and the subsequent 1842 Treaty of Nanking which allowed the establishment of the Shanghai International Settlement. The city then flourished as a center of commerce between east and west, and became the undisputed financial hub of the Asia Pacific in the 1930s. However, with the Communist Party takeover of the mainland in 1949, the city's international influence declined. In the 1990s, the economic reforms introduced by Deng Xiaoping resulted in an intense re-development of the city, aiding the return of finance and foreign investment to the city.