PDU

PDU may stand for:
 * Project for Democratic Union, a European open-source think tank
 * Partia për Drejtësi dhe Unitet (Party for Justice and Unity), a former political party in Albania
 * Partidul Democrat al Unirii (Democratic Union Party), a political group in Romania
 * Paysandú Airport (IATA: PDU)
 * Power distribution unit, for electrical power
 * Protocol data unit, in telecommunications
 * Procedure defined unit, a unit of measurement relative to a specific application
 * Professional Development Units, credits toward certification or re-certification at Project Management Institute (PMI)