UDF
Template:Sister project UDF may refer to:
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Astronomy
- Ultra Deep Field, a view of the distant universe taken in 2004 by the Hubble space telescope
Computing
- Universal Disk Format, an operating-system-independent file system commonly used on DVD and other digital media
- Uniqueness Database File, a Windows XP Professional configuration text file
- User-defined function, a function provided by the user of a program or environment
Organizations
Politics
- United Democratic Forces (ОДС), an electoral alliance in Bulgaria
- United Democratic Forces of Belarus, a coalition of political parties participating as the main opposition group during the 2006 presidential election
- United Democratic Front (Botswana)
- United Democratic Front (Kerala), India
- United Democratic Front (Mizoram), India
- United Democratic Front (Malawi)
- United Democratic Front (Namibia)
- United Democratic Front (Pakistan)
- United Democratic Front (South Africa)
- United Democratic Front (South Sudan)
- United Democratic Forum Party, a former political party in Kenya
- Union pour la Démocratie Française (Union for French Democracy), a former centrist pro-European French political party
Military
- Ulster Defence Force, a paramilitary group in Northern Ireland
- Union Defence Force (South Africa), the predecessor of the South African Defence Force from 1912 to 1957
- Union Defence Force (UAE), the armed forces of the United Arab Emirates
Other organizations
- United Dairy Farmers, an American chain of ice cream shops
Other uses
- Unducted fan, another name for a propfan engine
- United Defense Force, a fictional global military in the manga All You Need Is Kill and its film adaptation Edge of Tomorrow
See also
- Union of Democratic Forces (disambiguation), several political parties