UD

UD may refer to:

Arts and entertainment

Unificación Democrática, the Democratic Unification political party in Honduras
Unión Democrática, a political party in Guatemala
Unlock Democracy, a British political organization
Utenriksdepartementet, the Norwegian Ministry of Foreign Affairs
Utrikesdepartementet, the Swedish Ministry of Foreign Affairs

University of Dallas, a Catholic university in Texas
University of Dammam, a Saudi university in Dammam, Eastern region of Kingdom of Saudi Arabia
University of Dayton, a university in Ohio
University of Delaware, a university in Delaware
University of Detroit Jesuit High School and Academy, a Catholic secondary school in Michigan
University of Detroit Mercy, a Catholic university in Michigan
University of Dublin, a university in the Republic of Ireland
University of Dubuque, a Presbyterian university in Iowa
University of Durham, a university in the United Kingdom

UD Trucks, a Japanese truck manufacturer
Hex'Air (IATA airline designator UD)
United Devices, a commercial distributed computing company that focuses on CPU scavenging and enterprise cluster management
United Distillers, a whiskey holding company
Upper Deck, a manufacturer of collectibles and trading cards

Ulster Defence Regiment Medal, a UK military medal
Undead, beings in mythology, legend, or fiction that are deceased but behave as if alive
Unlawful detainer, or eviction, in property law
Universal Declaration of Human Rights, a declaration adopted by the United Nations General Assembly
Urban Dictionary, an online reference for slang terminology