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 Qualifications Scotland 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; also known as persistent drive (for) autonomy or extreme demand avoidance 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