RSA may refer to:

Organizations

Academia and education

* Rabbinical Seminary of America, a yeshiva in New York City *

Regional Science Association International The Regional Science Association International (RSAI) is a cluster of scholarly societies whose members engage in regional science. Origins In the late 1940s and the early 1950s, the economist Walter Isard Walter Isard (April 19, 1919 – No ...

(formerly the Regional Science Association), a US-based learned society *

Renaissance Society of America The Renaissance Society of America (RSA) is an academic association founded in 1954 supporting the study of the Renaissance period, 1300–1650. The RSA brings together scholars from many backgrounds in a wide variety of disciplines from North A ...

, a scholarly organization based in New York City *

Rhetoric Society of America The Rhetoric Society of America (RSA) is an academic organization for the study of rhetoric. The Society's constitution calls for it to research rhetoric in all relevant fields of study, identify new areas of study, encourage experimentation in te ...

, an academic organization for the study of rhetoric * Royal Scottish Academy, a Scottish institute of the Arts * Royal Society of Arts, formally the Royal Society for the encouragement of Arts, Manufactures and Commerce, a British institution

Military

* Redstone Arsenal, a United States Army post adjacent to Huntsville, Alabama *

Royal New Zealand Returned and Services' Association The Royal New Zealand Returned and Services' Association, best known simply as the RSA, is one of the largest voluntary welfare organisations in New Zealand and one of the oldest ex-service organisations in the world. Wounded soldiers returnin ...

, an organization for the welfare of veterans of New Zealand's military *

Royal School of Artillery The Royal School of Artillery (RSA) is the principal training establishment for artillery warfare in the British Army. Established in 1915, it is located at Larkhill, Wiltshire, on the south edge of Salisbury Plain in the United Kingdom. The Scho ...

, a British Army training establishment for artillery warfare * Royal Signals Association, an organization for serving and retired members of the Royal Corps of Signals, of the British Army

Other organizations

RSA Insurance Group RSA Insurance Group Limited ( trading as RSA, formerly RSA Insurance Group plc and Royal and Sun Alliance) is a British multinational general insurance company headquartered in London, England. RSA has major operations in the United Kingdom, Ire ...

(Royal and Sun Alliance), United Kingdom *

RSA Security RSA Security LLC, formerly RSA Security, Inc. and doing business as RSA, is an American computer and network security company with a focus on encryption and encryption standards. RSA was named after the initials of its co-founders, Ron Rive ...

, a US network security company *

Rehabilitation Services Administration The Rehabilitation Services Administration (RSA) is a federal agency under the United States Department of Education, Office of Special Education and Rehabilitative Services, and is headquartered within the Department of Education in Washingto ...

, a US Department of Education agency *

Retirement Systems of Alabama Retirement Systems of Alabama is the administrator of the pension fund for employees of the state of Alabama. It is headquartered in the state capital Montgomery, Alabama. David G. Bronner is the chief executive officer. Under Bronner's leader ...

, US *

Ridley Scott Associates Sir Ridley Scott (born 30 November 1937) is a British film director and producer. Directing, among others, science fiction films, his work is known for its atmospheric and highly concentrated visual style. Scott has received many accolades th ...

, a UK film company *

Road Safety Authority The Road Safety Authority (RSA; ga, Údarás Um Shábháilteacht Ar Bhóithre) is a state agency formed by the Irish Government to promote road safety within the Republic of Ireland. The agency has devolved control of much of the work of the D ...

, Ireland *

Russian Ski Association The Russian Ski Association (RSA) is a non-governmental organization, which represents Russian ski sports in the international field. Organization includes four all-Russian sports Federations: Russian Alpine Skiing and Snowboard Federation, Cross-C ...

Places

*Republic of

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. It is bounded to the south by of coastline that stretch along the Atlantic Ocean, South Atlantic and Indian Oceans; to the ...

Santa Rosa Airport (Argentina) Santa Rosa Airport ( es, link=no, Aeropuerto de Santa Rosa) is an airport in La Pampa Province, Argentina serving the cities of Santa Rosa and Toay. The airport is on the northeast corner of Santa Rosa. History The airport was built in 1940. ...

, in La Pampa province (IATA code RSA)

In science and technology

Biology, organic chemistry, and medicine

Respiratory sinus arrhythmia Vagal tone is activity of the vagus nerve, the 10th cranial nerve and a fundamental component of the parasympathetic branch of the autonomic nervous system. This branch of the nervous system is not under conscious control and is largely responsible ...

, the heart rate variation due to respiration *

Retrosynthetic analysis Retrosynthetic analysis is a technique for solving problems in the planning of organic syntheses. This is achieved by transforming a target molecule into simpler precursor structures regardless of any potential reactivity/interaction with reagents. ...

, in organic chemistry *

Rsa RNA Rsa RNAs are non-coding RNAs found in the bacterium ''Staphylococcus aureus''. The shared name comes from their discovery, and does not imply homology. Bioinformatics scans identified the 16 Rsa RNA families named RsaA-K and RsaOA-OG. Others, RsaOH ...

, partially characterised non-coding RNA from ''Staphylococcus aureus''

Cryptography and security

RSA (cryptosystem) RSA (Rivest–Shamir–Adleman) is a public-key cryptosystem that is widely used for secure data transmission. It is also one of the oldest. The acronym "RSA" comes from the surnames of Ron Rivest, Adi Shamir and Leonard Adleman, who publi ...

(Rivest–Shamir–Adleman), for public-key encryption **

RSA Conference The RSA Conference is a series of IT security conferences. Approximately 45,000 people attend one of the conferences each year. It was founded in 1991 as a small cryptography conference. RSA conferences take place in the United States, Europe, Asia ...

, annual gathering **

RSA Factoring Challenge The RSA Factoring Challenge was a challenge put forward by RSA Laboratories on March 18, 1991 to encourage research into computational number theory and the practical difficulty of factoring large integers and cracking RSA keys used in cryptogr ...

, for factoring a set of semi-prime numbers **

RSA numbers In mathematics, the RSA numbers are a set of large semiprimes (numbers with exactly two prime factors) that were part of the RSA Factoring Challenge. The challenge was to find the prime factors of each number. It was created by RSA Laboratories i ...

, with two prime numbers as factors

Other uses in science and technology

RSA (missile) The RSA is one of the earliest surface-to-air missiles systems, developed by the Swiss companies Oerlikon-Bührle and Contraves starting in 1947. The missile went through a rapid development process with several upgraded versions, and was the fi ...

, a Swiss-developed surface-to-air missile system *

Rational Software Architect The Unified Modeling Language (UML) is a general-purpose, developmental modeling language in the field of software engineering that is intended to provide a standard way to visualize the design of a system. The creation of UML was originally m ...

, part of IBM Rational Application Developer *

Remote supervisor adapter The IBM Remote Supervisor Adapter is a full-length ISA or PCI adapter produced by the IBM corporation. Adapter versions Systems Management Adapter (ASMA) This is a full-length ISA or PCI adapter. The ISA version is very rare, and was only eve ...

, an out-of-band management interface on IBM servers *''Revolver Stechkina-Avraamova'', a designation of the Russian

OTs-01 Kobalt The OC-01 Kobalt (russian: ОЦ-01 "Кобальт", "Cobalt") is a Russian double-action 9 mm revolver designed by Igor Stechkin and Boris Avraamov.Револьвер ОЦ-01 "Кобальт" // Виктор Шунков. Боевое и слу ...

revolver * Roentgen stereophotogrammetric analysis, also called radiostereometric analysis, a method of calculating 3D orientation using X-ray images

Other uses

* Ray Steadman-Allen, a composer of music * Repressive state apparatuses, a concept in Louis Althusser's philosophy *Responsible Service of Alcohol,

alcohol server training Alcohol server training is a form of occupational education typically provided to servers, sellers and consumers of alcohol to prevent intoxication, drunk driving and underage drinking. This training is sometimes regulated and mandated by state a ...

in several Australian states *, a French in-work welfare benefit *

New Hampshire Revised Statutes Annotated The New Hampshire Revised Statutes Annotated (RSA) forms the codified law of the state subordinate to the New Hampshire State Constitution. History The RSA is a set of law books published by Thomson West. The work of updating the previous codif ...

, an entire body of laws *

Runway safety area A runway safety area (RSA) or runway end safety area (RESA) is defined as "the surface surrounding the runway prepared or suitable for reducing the risk of damage to airplanes in the event of an undershoot, overshoot, or excursion from the runway. ...

, or runway end safety area {{Disambiguation