Editing PSA

{{Wiktionary|PSA}}
'''PSA''', '''PsA''', '''Psa''', or '''psa''' may refer to:
{{TOC right}}

== Biology and medicine ==
* [[Posterior spinal artery]]
* [[Primary systemic amyloidosis]], a disease caused by the accumulation of abnormal proteins
* [[Prostate-specific antigen]], an enzyme used as a blood tracer for prostate cancer 
* [[Psoriatic arthritis]], an inflammatory disease
* ''[[Pseudomonas aeruginosa]]'', a species of bacterium
* [[Pseudomonas syringae pv. actinidiae|''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 separating, or purifying, gases

== Computing ==
* [[Professional services automation]], software for automating project and billing management for professional service firms
* [[PSA Certified]], Platform Security Architecture, a security certification for the Internet of Things
* [[Plesk]] Server Administrator, a commercial web hosting automation program
* [[Persistent staging area]], a staging area in [[data vault modeling]]

== Contracts, legislation, and government ==
* [[Passenger Vessel Services Act of 1886]] or Passenger Services Act, US 
* [[Payment Services Act]], Singapore
* [[Primary statistical area]], a collective term for metropolitan, micropolitan, and combined statistical areas
* [[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 Safety Act]], a law in Jammu and Kashmir
* [[Public service agreement]], UK government department targets for 3-year period
* [[Public service announcement]]
* [[Purchase and sale agreement]], an agreement between a buyer and a seller

== Organizations ==
=== World-wide scope ===
* [[Pacific Science Association]]
* [[Pacific Sociological Association]]
* [[Philosophy of Science Association]]
* [[Pro Snowboarders Association]]
* [[Professional Skaters Association]]
* [[Professional Squash Association]]

=== Specific to large English-speaking countries ===
* Australia: 
** [[Pharmaceutical Society of Australia]]
** [[Public Schools Association]], Perth
** [[Public Service Association of NSW]], a trade union
** [[The Salvation Army, Parramatta]]
* United Kingdom:
** [[Phone-paid Services Authority]]
** [[Political Studies Association]], for academics
** [[Professional Standards Authority for Health and Social Care]]
** [[Property Services Agency]], former government agency
* United States:
** [[Partnership for a Secure America]]
** [[Photographic Society of America]]
** [[Pi Sigma Alpha]], college honor society for political science
** [[Poultry Science Association]]

=== Other country-specific organizations ===
* [[Parti Solidaire Africain]] (Democratic Republic of the Congo), defunct political party
* [[New Zealand Public Service Association]],  trade union
* [[PSA BPOL]] a specialised police unit within the Federal Police of Germany
* [[Petroleum Safety Authority Norway]], governmental supervisory authority
* [[Palestinian Scout Association]]
* [[Philippine Statistics Authority]]
* Philippine Support Association, raising credit for the poor
* [[Polish Society of Actuaries]]
* [[PSA International]] (Singapore), formerly Port of Singapore Authority
* [[Public Servants Association of South Africa]], trade union
* ''Partido Socialista de Andalucía'' (Spain), former name of the [[Andalusian Party]]
* [[Socialist Party of Aragon]] (''Partido Socialista de Aragón''), a now defunct Spanish political party
* [[Authentic Socialist Party (Argentina)|Authentic Socialist Party]] (Argentina), ''Partido Socialista Auténtico''
* [[Public Services Association]] (Trinidad and Tobago), a trade union
* ''Partido Socialista Argentino'', the [[Argentine Socialist Party]], a now merged Argentinian political party
* [[People's Struggle Alliance]], Sri Lankan political alliance

== Transport ==
* [[PSA Airlines]], a subsidiary of American Airlines Group
* [[Pisa International Airport]], Pisa, Italy, IATA code PSA
* [[Pacific Southwest Airlines]], US, 1949 to 1988, ICAO code PSA
* [[Penn Station Access]], a planned New York City rail upgrade
* [[PSA Group]], ''Peugeot Société Anonyme'', a defunct French multinational automobile manufacturer now part of Stellantis

== Other uses ==
* [[PSA (song)|"PSA" (song)]] by SZA, from the album ''Lana'' (2023)
* [[PSA 5.7 Rock]], a pistol
* [[Penal substitution|Penal substitutionary atonement]], a theory of atonement in Christianity
* [[Professional Sports Authenticator]] (PSA), an authenticator of sports and trading cards, and similarly hand-signed artifacts
* [[Autonomous Socialist Party (disambiguation)]]
* [[Pisa language]] or Asue Awyu, ISO 639-3 code psa
* [[Piscis Austrinus]] (Southern Fish) constellation, IAU abbreviation PsA
* [[Public Storage]] stock ticker
* [[Power Station of Art]], a contemporary art museum in Shanghai, China
* [[Pressure-sensitive adhesive]]
* "PSA", title of an earlier version of the R.E.M. song "[[Bad Day (R.E.M. song)|Bad Day]]"
* [[Palmetto State Armory]], an American firearms company based in Columbia, South Carolina.

{{Disambiguation}}