LDU

LDU may refer to:

Politics

 * Alliance of Independents (Landesring der Unabhängigen), 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 (Landesselbstverwaltung der Ungarndeutschen)

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