Look up UDF in Wiktionary, the free dictionary.

UDF may refer to:

Astronomy

• Ultra Deep Field, a view of the distant universe taken in 2004 by the Hubble space telescope
  • UDF 423, a distant spiral galaxy
  • UDF 2457, a red dwarf star

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
• Ural Delay Factor, When your sidecar attracts attention from bystanders, thereby delaying your departure.

See also

• Union of Democratic Forces (disambiguation), several political parties

This disambiguation page lists articles associated with the title UDF.
If an internal link led you here, you may wish to change the link to point directly to the intended article.