LDU
LDU may refer to:
Politics
- Alliance of Independents (Template:Langx), a 1936–1999 political party in Switzerland
- Lahu Democratic Union, a political and insurgent group in Myanmar
- Liberal and Democratic Union, a 1906–1910 South Australian political party
- National Self-Government of Germans in Hungary (Template:Langx)
Science and mathematics
- Land disposal unit, a term in bioremediation
- LDU decomposition, a factorization of matrices found in linear algebra
- Linear Drive Unit, a type of orbital replacement unit used on the International Space Station
Other uses
- Lahad Datu Airport (IATA code), Sabah, Malaysia
- Lawrence Debate Union, the official debate team of the University of Vermont
- Liga Deportiva Universitaria (disambiguation), several Ecuadorian football clubs
- Local Delivery Unit, last three digits of a Canadian postal code
- Luke Davies-Uniacke (born 1999), Australian rules footballer