PPA may refer to:

Biology and medicine

• Palpatio per anum, a rectal examination
• Parahippocampal place area, in the brain
• Phenylpropanolamine, a largely discontinued decongestant drug
• Primary progressive aphasia, a neurological condition affecting language

Politics, government, and military

• Public Policy and Administration, an academic journal on public administration, often abbreviated as PPA
• Paraguayan People's Army, a group considered a terrorist organization by the Paraguayan state
• Parti du Peuple Algerien, an Algerian political party
• Philadelphia Parking Authority, a parking agency in Pennsylvania, United States
• Philippine Ports Authority
• Progressive Peoples Alliance, a political party in Nigeria
• People's Party of Arunachal, an Indian regional political party
• Popski's Private Army, a small World War II Special Forces unit of the British 8th Army

Businesses and organizations

Businesses

• Palau Pacific Airways, a defunct charter airline
• Piraeus Port Authority, Greece

Professional and trade associations

• Pakistan Pharmacists Association
• Professional Photographers of America
• Professional Publishers Association
• Pictorial Photographers of America, founded by Clarence Hudson White with several others in 1916
• Pre-School Playgroups Association, a British charitable organisation

Sports bodies

• Professional Pickleball Association
• Professional Putters Association
• Poker Players Alliance, a USA advocacy/lobbying group

Laws

• Pension Protection Act of 2006, United States
• Pollution Prevention Act of 1990, United States
• Public Procurement Act (Switzerland)

Mathematics

• Point pattern analysis, in geometry
• PPA (complexity), a class of computational search problems

Technology and science

• Pay-per-action
• Personal Package Archive, an Ubuntu Linux software repository for managing source packages
• Polyphthalamide, semi-crystalline high-temperature plastic in the Nylon family
• Power purchase agreement, a contract for the purchase of electrical energy
• Polyphosphoric acid
• PPa, symbol for the unit of pressure, petapascal (10¹⁵ pascal)
• pPa, symbol for the unit of pressure, picopascal (10^-12 pascal)

Other uses

• Purchase price allocation
• Participatory poverty assessment
• Provisional application, commonly known as a 'provisional patent application'
• Planning, preparation and assessment, an allocation given to teaching professionals as part of their timetable

This disambiguation page lists articles associated with the title PPA.
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