UDT
Look up UDT in Wiktionary, the free dictionary.
UDT may refer to:
Organisations
- Uitgeverij De Tijd, a former Belgian publisher
 - Underwater Demolition Team, United States Naval reconnaissance and amphibious landing beach demolition unit from which the U.S. Navy SEALs evolved
 - Republic of Korea Navy UDT/SEAL, from the Republic of Korea Navy
 - União Democrática Timorense, (Timorese Democratic Union), a conservative political party in East Timor
 - Union Démocratique Tchadienne, (Chadian Democratic Union), the second African political party in Chad
 - Union Djiboutienne du Travail (Union of Djibouti Workers), a trade union centre in Djibouti
 - United Dominions Trust, a subsidiary of the former Trustee Savings Bank, merged with Lloyds Bowmaker in 2001
 - Union démocratique du travail, a left-wing Gaullist party
 
Computing
- UDP-based Data Transfer Protocol, a high-performance data transport protocol and library
 - User-defined type, in computer science that is generally synonymous with "record", "structure", "composite type" or "class"
 
Technology
- Urine Diversion Toilet, a toilet system where urine and faeces are separated at source
 
Measurement
Underdeck tonnage, a unit of measurement of a ship's weight