Politics

• People's Democratic Union (Portugal)
  People's Democratic Union (Portugal)
  The People's Democratic Union is a marxist political movement in Portugal. The UDP transformed itself into a political association at its 15th congress due to its merger with other left-wing parties in the Left Bloc....
  
   (União Democrática Popular), a left-wing political party in Portugal
• Ulster Democratic Party
  Ulster Democratic Party
  The Ulster Democratic Party was a small loyalist political party in Northern Ireland. It was established in June 1981 as the Ulster Loyalist Democratic Party by the Ulster Defence Association to replace their New Ulster Political Research Group...
  
  , a political party in Northern Ireland
• United Democratic Party (Belize)
  United Democratic Party (Belize)
  The United Democratic Party is one of the two major political parties in Belize, and currently the ruling party, having won the 2008 general elections. A centre-right conservative party, it is currently led by Dean Barrow.-Founding:...
  
  , a political party in Belize
• United Democratic Party (Cayman Islands)
  United Democratic Party (Cayman Islands)
  The United Democratic Party is a political party in the Cayman Islands.In the elections, 8 November 2000, with a turnout of 80% only non-partisans were elected...
  
  , a political party in the Cayman Islands
• United Democratic Party (The Gambia)
  United Democratic Party (The Gambia)
  The United Democratic Party is a conservative political party in The Gambia, affiliated to the International Democratic Union, founded in 1996 by the human rights lawyer Ousainou Darboe...
  
  , a political party in The Gambia
• United Democratic Party (Marshall Islands)
  United Democratic Party (Marshall Islands)
  The United Democratic Party is a political party in the Marshall Islands. At the last legislative elections, 17 November 2003, no parties participated, though part of the members could be members of either the Kabua Party or the United Democratic Party....
  
  , a political party in the Marshall Islands
• United Democratic Party (Meghalaya)
  United Democratic Party (Meghalaya)
  The United Democratic Party is a political party recognised in Meghalaya state, India. It is led by Donkupar Roy....
  
  , a political party in India
• United Democratic Party (Namibia)
  United Democratic Party (Namibia)
  The United Democratic Party is a political party in Namibia, representing mainly people from Eastern Caprivi and advocating for the secession of the Caprivi Strip....
  
  , a banned political party in Namibia
• United Democratic Party (Republic of Korea), a political party in South Korea
• United Democratic Party (Tanzania)
  United Democratic Party (Tanzania)
  The United Democratic Party is a liberal party in Tanzania.The party is an observer at Liberal International.At the 2000 legislative elections, the party 2 out of 269 seats in the National Assembly...
  
  , a political party in Tanzania
• United Democratic Party (UK)
  United Democratic Party (UK)
  The United Democratic Party was a minor political party in the United Kingdom. It was formed in 1974 by a group of Independent Conservatives disaffected with Edward Heath's leadership of the Conservative Party...
  
  , a political party in the United Kingdom
• Unidad Democratica y Popular
  Unidad Democratica y Popular
  The Democratic and Popular Union was a Bolivian umbrella political party uniting various smaller left-wing parties...
  
  , former Bolivian political party

Technology

• Usenet Death Penalty
  Usenet Death Penalty
  On Usenet, the Usenet Death Penalty is a final penalty that may be issued against Internet service providers or single users who produce too much spam or fail to adhere to Usenet standards...
  
  , a final penalty against Usenet users or Internet service providers
• User Data Preservation, a feature of mobile phone
  Mobile phone
  A mobile phone is a device which can make and receive telephone calls over a radio link whilst moving around a wide geographic area. It does so by connecting to a cellular network provided by a mobile network operator...
  
  s that retains user data after a firmware update
• User Datagram Protocol
  User Datagram Protocol
  The User Datagram Protocol is one of the core members of the Internet Protocol Suite, the set of network protocols used for the Internet. With UDP, computer applications can send messages, in this case referred to as datagrams, to other hosts on an Internet Protocol network without requiring...
  
  , a simple transport protocol used on the Internet

Other

• Unit Deployment Program
  Unit Deployment Program
  To reduce the number of unaccompanied tours and improve unit continuity, the Commandant of the Marine Corps, established the Unit Deployment Program to provide for the deployment of units to the Western Pacific for periods of approximately six months...
  
  , overseas rotations to Japan by United States Marine Corps squadrons and battalions
• Unitary Development Plan
  Unitary Development Plan
  In United Kingdom planning law, a unitary development plan is an old-style development plan prepared by a metropolitan district and some unitary local authorities that contains policies equivalent to those in both a structure plan and a local plan...
  
  , formerly a spatial planning plan used by local authorities in England and Wales