UDC may refer to:
Politics Central African Democratic Union (), a political party in the Central African Republic Christian Democratic Union (Dominican Republic) (), a former political party in the Dominican Republic Christian Democratic Union (Ecuador) (), political party in Ecuador Democratic Union of Cameroon (), a political party in Cameroon Democratic Union of Catalonia (), a political party in Spain Nicaraguan Christian Democratic Union (), a political party in Nicaragua Swiss People's Party (), a political party in Switzerland Union of the Centre (1993), a former political party in Italy Union of the Centre (2002), a political party in Italy Union of Christian and Centre Democrats (), a political party in Italy Union of Democratic Control, a British campaigning group set up to oppose the First World War Union of the Right and Centre (), an electoral alliance in France Umbrella for Democratic Change, a political party in Botswana
Government Unified Development Code (also known as a Unified Development Ordinance), a local policy instrument that combines zoning regulations with other desired city regulations Urban Development Corporation, a diversified public authority in New York State, United States Urban district council, a former level of local authority in England and Wales Urban district council, a former level of local authority in Ireland Utah Department of Corrections, a government agency dedicated to the management and supervision of convicted felons in the State of Utah, United States Uganda Development Corporation, an agency of the Government of Uganda, mandated to promote and facilitate the industrial and economic development of that country
Education University of A Coruña (), a university in A Coruña, Spain University of the District of Columbia, a university in Washington, D.C., United States University Development Center, an educational-work co-operational program operated by GE Aviation in the United States
Computing Utah Data Center, a large data center maintained by the National Security Agency, United States Utility Data Center, a Hewlett-Packard product designed to help deploy virtualized resources
Other uses UDC Finance, New Zealand finance company UDC Homes, an American homebuilder United Daughters of the Confederacy, neo-confederate non-profit based in the US Universal Decimal Classification, a system of library classification derived from the Dewey Decimal Classification