UD

UD may refer to:

In education:

• 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

Businesses:

• UD Trucks, a Japanese truck manufacturer
• 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
• Hex'Air (IATA airline designator)

In entertainment:

• Oud, a Middle Eastern musical instrument
• Urban Dead, a massively multi-player online role-playing game
• Undead, particularly in the Warcraft universe

Other uses:

• Ulster Defence Regiment Medal, a UK military medal
• Unanimous decision, usually referring to combat sport victories
• Universal Declaration of Human Rights, a declaration adopted by the United Nations General Assembly
• Urban Dictionary, an online reference for slang terminology
• Utenriksdepartementet, the Norwegian Ministry of Foreign Affairs
• Utrikesdepartementet, the Swedish Ministry of Foreign Affairs