PSA

PSA, PsA, Psa, or psa may refer to:

Airlines and airports

• PSA Airlines, a subsidiary of US Airways, Inc.
• Pisa International Airport, Pisa, Italy, IATA code PSA
• Pacific Southwest Airlines, US, 1949 to 1988, ICAO code PSA

Art and culture

• Power Station of Art, a contemporary art museum in Shanghai, China
• Public service announcement

Astronomy

• Piscis Austrinus (Southern Fish) constellation, IAU abbreviation PsA

Automotive

• PSA Peugeot Citroën, French multinational automobile manufacturer

Biology

• Primary systemic amyloidosis, a disease caused by the accumulation of abnormal proteins
• Prostate-specific antigen, test for prostate cancer
• Psoriatic arthritis (PsA), an inflammatory disease
• Pseudomonas syringae pv actinidiae, a pathovar of a bacterium that attacks kiwifruit

Chemistry

• Polar surface area, the surface sum over all polar atoms of a molecule
• Pressure swing adsorption, a technology for purifying gases

Computing

• Plesk Server Administrator, a commercial web hosting automation program
• Professional services automation software, a project and resource management suite

Contracts, legislation, and government

• Passenger Vessel Services Act of 1886 or Passenger Services Act, US
• Problem-solution approach, an approach for assessing inventive step at the European Patent Office
• Production sharing agreement, a contract between a government and a resource extraction company
• Public service agreement, UK government department targets for 3-year period

Organizations

• Pacific Science Association
• Pacific Sociological Association
• Palestinian Scout Association
• Philosophy of Science Association
• Pro Snowboarders Association
• Professional Skaters Association
• Professional Squash Association
• Public Securities Association
• Phone-paid Services Authority

Australia

• Pharmaceutical Society of Australia
• Public Schools Association, Perth
• Public Service Association of NSW, a trade union
• The Salvation Army, Parramatta

New Zealand

• New Zealand Public Service Association, a trade union

Norway

• Petroleum Safety Authority Norway, a governmental supervisory authority

Philippines

• Philippine Support Association, a group that raises credit for the poor

Poland

• Polish Society of Actuaries

Singapore

• PSA International, formerly Port of Singapore Authority

South Africa

• Public Servants Association of South Africa, a trade union

Spain

• Partido Socialista de Andalucía, former name of the Andalusian Party

Trinidad and Tobago

• Public Services Association, a trade union

United Kingdom

• Political Studies Association, an academic association
• Property Services Agency, a former UK government agency

United States

• Partnership for a Secure America, a bipartisan nonprofit organization based in Washington, D.C.
• Photographic Society of America
• Pi Sigma Alpha, college honor society for political science
• Poultry Science Association

Other uses

• Pisa language or Asue Awyu, ISO 639-3 code psa
• "PSA", precursor to the R.E.M. song "Bad Day"
• PSA prepayment model, developed by the Public Securities Association
• Pressure-sensitive adhesive
• Public service announcement
• Purchase and Sale Agreement, an agreement between a buyer and a seller