PPD may refer to:

  • Points Per Day is a mechanism for measuring work done in the Folding@home distributed computing project
  • PostScript Printer Description files are created by vendors to describe the entire set of features and capabilities available for their PostScript printers
Political parties
  • Popular Democratic Party of Puerto Rico (Partido Popular Democrático), a political party in Puerto Rico
  • Partido Popular Democrático/Partido Social Democrata, a political party in Portugal
  • Partito Popolare Democratico Svizzero, a political party in Switzerland
  • Party for Democracy (Partido por la Democracia), a political party in Chile
Science and Medicine
  • p-Phenylenediamine, an aromatic amine
  • Paranoid personality disorder, a psychiatric diagnosis
  • Persistent Pigment Darkening, a measure of UVA protection by sunscreens
  • Pharmaceutical Product Development, a global contract research organization (CRO)
  • Postharvest physiological deterioration, a process that renders root tubers of cassava black and inedible
  • Postpartum depression, an after childbirth condition, is a mental health disorder striking women within the first year after giving birth
  • Pour Point Depressant, a chemical added to crude oil to depress (lower) the Pour point
  • ppd, Protopanaxadiol, an active molecule
  • Purified Protein Derivative, also known as the Mantoux screening test, Tuberculin Sensitivity Test, Pirquet test, or PPD test, used for tuberculosis testing
  • Pani Poni Dash!, an anime series
  • Partners in Population and Development, an intergovernmental organization
  • Philadelphia Police Department, a police agency in Pennsylvania, U.S.
  • Phoenix Police Department, a police agency in Arizona, U.S.
  • Pontypridd railway station, Wales, National Rail station code
  • PPD-40, a Russian submachine gun
  • Pre-Paid Legal Services, Inc. New York Stock Exchange ticker symbol
  • Published Price to Dealer, a music industry term designating unit price
  • Postponed, most commonly a sporting event, especially baseball, usually due to rain, see also Rainout (sports)
  • Punch Pear Day is a day that is on December 1 of every year that celebrates Punch Pear or PP with a 1 hour and thirty minute Christmas special.