PAA may refer to:

Businesses and organizations Pacific American Airlines Pamoja African Alliance, a Kenyan political party PanAfrican Archaeological Association Pan African Association Pan American World Airways, commonly known as Pan Am Pan American Association of Anatomy Patriot Alliance Association, a radical Chinese nationalist party in Taiwan Pickleball Australia Association, Australia's national governing body for pickleball Pickleball Association of Australia, former name of Pickleball Association of Queensland Polish American Association Population Association of America, dedicated to population and demography studies Portland Adventist Academy, an Adventist High School

Science, technology and mathematics Chemistry and materials science Peroxyacetic acid, a chemical Pharmacologic Ascorbic Acid, a medical treatment Phenylacetic acid, a chemical Phosphoamino acid analysis, a biochemistry technique Polyacrylamide, an acrylate polymer Polyacrylic acid, an acrylic polymer Primary Aromatic Amine, a group of compounds

Electronic devices Personal Attack Alarm Piezo Audio Amplifier

Linguistics Proto-Afroasiatic language Proto-Austroasiatic language

Statistics , dimension reduction method

Legislation Perpetuities and Accumulations Act 1964, UK act of Parliament Perpetuities and Accumulations Act 2009, UK act of Parliament Protect America Act of 2007, amendment to the US Foreign Intelligence Surveillance Act

Other uses Penny Arcade Adventures, video game series Prueba de Aptitud Académica, standardized test for university admissions

See also Paa (disambiguation)