PDA may refer to:

Law and culture

  • "PDA" (The Office), an episode from the American television sitcom The Office
  • Past Doctor Adventures, spin-off novels from the BBC's Doctor Who
  • Pregnancy Discrimination Act, US
  • Professional Development Award, offered by the Scottish Qualification Authority
  • Pub Design Awards, UK
  • Public display of affection, an act of physical intimacy in the view of others

Music

  • "PDA" (Interpol song), a song by Interpol
  • "PDA", a song by the Backstreet Boys from This Is Us
  • "PDA", a song by Audio Adrenaline from Audio Adrenaline
  • "P.D.A. (We Just Don't Care)", a song by John Legend

Organizations

  • Parenteral Drug Association, a global pharmaceutical trade association
  • Pharmacists' Defence Association, UK
  • Peruvian Debate Association, for inter-school debating
  • Pinoy Dream Academy, the Philippine franchise of Endemol's Star Academy
  • Population and Community Development Association, Thailand
  • Private defense agency, an enterprise which would provide personal protection and military defense services to individuals
  • Professional Driver Association, of NASCAR drivers before the 1969 Talladega 500
  • Public development authority, government-owned corporations in Washington, US

Science and technology

  • Parts departing aircraft, mid-air loss of screws, rivets, doors, etc.
  • Patron-driven acquisition, a mechanism for libraries to purchase books
  • Personal digital assistant, an early kind of mobile device
  • Photodiode array, a type of detector
  • Pitch detection algorithm, to find the pitch of a signal
  • Polydiacetylenes, a family of conducting polymers
  • Predictive analytics, a form of business analytics
  • Pushdown automaton, in automata theory

Biology and medicine

  • Pancreatic ductal adenocarcinoma, the main type of pancreatic cancer
  • Pathological demand avoidance, in psychology
  • Patent ductus arteriosus, a heart defect
  • Posterior descending artery, an artery
  • Potato dextrose agar, a microbiological medium for culturing yeast and fungus

Politics

  • Alternative Democratic Pole, a political party in Colombia (Polo Democrático Alternativo)
  • Aruban Democratic Party, an Aruban political party (Partido Democrático Arubano)
  • Movement of Democratic Action, a political party in Bosnia-Herzegovina (Pokret demokratske akcije)
  • Party of Democratic Action, a Bosniak party in Bosnia-Herzegovina
  • Presidential Drawdown Authority, US presidential power to transfer defense articles and services in emergencies
  • Progressive Democratic Alliance, a former political party in British Columbia, Canada
  • Progressive Democrats of America, a progressive political organization