United Cities and Local Governments (UCLG) is an umbrella organisation for cities, local governments, and municipal associations throughout the world. United Cities and Local Governments was founded in 2004, when the existing local government organisations - the International Union of Local Authorities (IULA), the United Towns Organisations (UTO), and Metropolis – united their respective global networks of cities and national associations of local governments in a single organisation. United Cities and Local Governments' headquarters, the World Secretariat, is based in Barcelona, Spain. UCLG is the largest local government organisation in the world and understands itself as the united voice and world advocate of democratic local self-government, de facto representing over half the world's population, the cities and association members of UCLG are present in over 120 UN Member States across seven world regions:
UCLG has also a dedicated "regional" Section for large metropolitan Areas, Metropolis.
Over 1,000 cities are direct members of United Cities and Local Governments, as well as 112 national associations which represent all the cities and local governments in their respective countries. Members vary, from small cities to national local governments associations and regional associations.
On May 8, 2004, United Cities and Local Governments (UCLG) adopted the Agenda 21 for culture as a reference document for its programmes on culture and assumed the role of coordinator of the process subsequent to its approval.
Its President since November 2010 is Mayor Kadir Topbaş (Istanbul). He replaces Mayor Bertrand Delanoë (Paris). Accompanying the Mayor of Istanbul, as Co Presidents are Antonio Costa of Lisbon, Portugal; Johnny Araya of San Jose de Costa Rica; Wan Qingliang of Guangzhou, China; Muchadeyi Masunda of Harare, Zimbabwe; and Ilsur Metshin of Kazan, Russian Federation. Ted Ellis, Mayor of Bluffton Indiana USA is the Treasurer.