DPD

The abbreviation DPD may stand for:

Computing

 * Dead Peer Detection, an IPSec VPN feature
 * Delegated Path Discovery, a public-key query method
 * Densely packed decimal, a system of binary encoding for decimal digits

Engineering and technology

 * Dew point depression
 * Diffusion pressure deficit
 * Digital Pre-Distortion, a subset of Multidimensional Digital Pre-distortion that deals with linearization of non-orthogonal, non-linear systems.
 * Digital product definition, a near-synonym of model-based definition
 * Dissipative particle dynamics, a mesoscopic particle-based materials simulation technique
 * Diver propulsion device, an underwater vehicle

Law

 * EU Dangerous Preparations Directive
 * EU Data Protection Directive
 * Development Plan Document, in town and country planning in England and Wales
 * Digital Phonorecord Delivery, a U.S. Copyright Office process for sound recording registration
 * Denver Police Department, Colorado
 * Detroit Police Department, Michigan
 * Dallas Police Department, Texas

Mental disorders

 * Dependent personality disorder, over-dependence on others
 * Depersonalization-derealization disorder, feeling detached from one's self
 * Depressive personality disorder, disorder with depressive features

Organic chemicals

 * Dihydropyrimidine dehydrogenase, an enzyme
 * N,N-diethyl-p-phenylenediamine, a phenylenediamine often used to determine chlorine in water

Politics

 * Democratic Party of Germany (Demokratische Partei Deutschlands), liberal party in Germany
 * Regional Representative Council (Dewan Perwakilan Daerah), a chamber of the Indonesian parliament

Other uses

 * DPDgroup, an international parcel-delivery business now re-branded as Geopost
 * Diccionario panhispánico de dudas (Pan-Hispanic Dictionary of Doubts), Spanish lexicon
 * Distributed participatory design
 * Dorking Deepdene railway station, England (GBR code: DPD)