SA

Sa, SA, S.A. or s.a. may refer to:

Music

 * Initialism for "soprano and alto", voice types for which a piece of music is written
 * SA (Samurai Attack), a Japanese punk rock band
 * SA Martinez, a vocalist and DJ for the band 311
 * Soziedad Alkoholika, a Spanish punk rock band
 * SA, a 2018 album by Jonathan Richman

Other media

 * Sa (film), a 2016 Indian film
 * S.A (manga), a manga series by Maki Minami
 * Something Awful, a comedy website
 * Star Awards, an annual Singaporean television award ceremony
 * Subterranean Animism, a video game from the Touhou series by ZUN
 * Siragadikka Aasai (TV series), an Indian TV series

Language and writing

 * Sa (cuneiform), a cuneiform sign
 * sa (hieroglyph), an Egyptian hieroglyph meaning "protection"
 * Sa (kana) (さ and サ), characters (kana) in the two Japanese syllabaries
 * Saa language, spoken in Vanuatu
 * Sanskrit (ISO 639-1 code: sa), a historical Indo-Aryan language, the liturgical language of Hinduism
 * Sine anno, Latin term for "without year" used in bibliographies to indicate items which do not record the year of publication
 * Sub anno (s.a. or sa), Latin term for "under the year" in annals which record by year
 * Sa (Javanese) (ꦱ), a character in the Javanese script

Military and paramilitary

 * Soviet Army, army of the Soviet Union
 * Sturmabteilung (SA), a paramilitary wing of the German Nazi Party (NSDAP), also known as the Brownshirts

Political organisations

 * Socialist Action (disambiguation), several organisations
 * Socialist Alliance (Australia), a Socialist political party
 * Socialist Alliance (England), a political party in England
 * Socialist Alternative (Australia), a Marxist political organisation

Other businesses and organizations

 * System Architect, an enterprise architecture product
 * S.A. (corporation) (Société Anonyme) a type of corporation in various countries
 * San Antonio Spurs, a basketball team in the U.S. National Basketball Association
 * The Salvation Army, an international church and charity
 * Sexaholics Anonymous, a sex-addiction recovery group based on the 12 steps of Alcoholics Anonymous
 * Shooting Australia, governing body for target shooting sports in Australia
 * Smokers Anonymous
 * South African Airways (IATA airline designator: SA)
 * Sports Authority, a defunct U.S. sporting goods retailer
 * Success Academy Charter Schools, term commonly abbreviated to 'Success Academy'

Places

 * Vehicle registration plate for the province of Salerno, Italy
 * SA postcode area, a group of postal districts near Swansea, Wales, UK
 * Sakha Republic, a federal Russian republic
 * Saline County, Kansas, U.S.
 * San Antonio, Texas, U.S.
 * Sarajevo (official city abbreviation)
 * Saudi Arabia (two-letter country code)
 * South Asia
 * South Africa
 * South America
 * South Australia

Biology and medicine

 * Salicylic acid, a plant hormone
 * Spontaneous abortion
 * Sustained action, a longer-acting form of a medication
 * Surface area
 * Sense of agency

Computing and telecommunications

 * .sa, the country code top level domain (ccTLD) for Saudi Arabia
 * Security association in the IPsec networking protocol
 * Selective availability, a mechanism for degrading the precision of the civilian GPS network
 * Simulated annealing, an optimisation technique
 * Software architect
 * Software architecture
 * Microsoft Software Assurance
 * Structured analysis, a software engineering technique
 * Suffix array, a sorted array of all suffixes of a string
 * System administrator
 * System architecture
 * Systems analysis
 * Systems analyst
 * System agent

Other uses in science, technology, and mathematics

 * Sa (Islamic measure), Arabic measure of volume
 * Samarium (former chemical symbol: Sa), a rare earth metal
 * Single action, a type of firearm trigger
 * Situation awareness, a component of aviation safety and other socio-technical systems
 * Spectral acceleration, in seismology and earthquake engineering
 * Superabundant number, a type of number (mathematical concept)
 * Unbarred spiral galaxy
 * Short axis, in single-photon emission computed tomography
 * Surface area

Other uses

 * Sa (Mandaeism), a type of Mandaean sacramental bread that is rolled up
 * Seaman apprentice, a U.S. Navy and Coast Guard rank
 * Secrecy agreement, a legal contract for confidentiality
 * Sex appeal, attraction on the basis of sexual desire
 * Sexual assault, the intentional act of sexually touching another person without their consent
 * Share-alike, a term used in Creative Commons licensing
 * Second Amendment to the constitutions of several sovereign states and subnational entities
 * Second Amendment to the United States Constitution, the most common meaning of "Second Amendment"
 * Single adult (LDS Church), a designation in The Church of Jesus Christ of Latter-day Saints for unmarried individuals 18 and older; sometimes used specifically to refer to unmarried individuals over 30
 * Special agent, a position usually held by investigative officers within certain law enforcement agencies in the United States
 * San Andreas (disambiguation)
 * MG SA, a sporting saloon