RSA may refer to:

Organizations

Academia and education

* Rabbinical Seminary of America, a yeshiva in New York City * Regional Science Association International (formerly the Regional Science Association), a US-based learned society * Renaissance Society of America, a scholarly organization based in New York City * Rhetoric Society of America, an academic organization for the study of rhetoric *

Royal Scottish Academy The Royal Scottish Academy (RSA) is the country's national academy of art. It promotes contemporary art, contemporary Scottish art. The Academy was founded in 1826 by eleven artists meeting in Edinburgh. Originally named the Scottish Academy ...

, a Scottish institute of the Arts *

Royal Society of Arts The Royal Society for the Encouragement of Arts, Manufactures and Commerce, commonly known as the Royal Society of Arts (RSA), is a learned society that champions innovation and progress across a multitude of sectors by fostering creativity, s ...

, a British charitable organisation, formally the Royal Society for the Encouragement of Arts, Manufactures and Commerce

Military

Redstone Arsenal Redstone Arsenal is a United States Army base adjacent to Huntsville, Alabama in the Wheeler National Wildlife Refuge. A census-designated place in Madison County, Alabama, United States, it is part of the Huntsville-Decatur Combined Statistica ...

, a United States Army post adjacent to Huntsville, Alabama * Royal New Zealand Returned and Services' Association, an organization for the welfare of veterans of New Zealand's military * Royal School of Artillery, 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 (Royal and Sun Alliance), United Kingdom *

RSA Security RSA Security LLC, formerly RSA Security, Inc. and trade name RSA, is an American computer security, computer and network security company with a focus on encryption and decryption standards. RSA was named after the initials of its co-founders, ...

, a US network security company * Rehabilitation Services Administration, a US Department of Education agency * Retirement Systems of Alabama, US * Ridley Scott Associates, a UK film company *

Road Safety Authority The Road Safety Authority (RSA; ) is a state agency of the Irish Government to promote road safety within Ireland. The agency has functions devolved from the Department of Transport. History and Governance The Road Safety Authority was establ ...

, Ireland * Russian Ski Association

Places

*Republic of

South Africa South Africa, officially the Republic of South Africa (RSA), is the Southern Africa, southernmost country in Africa. Its Provinces of South Africa, nine provinces are bounded to the south by of coastline that stretches along the Atlantic O ...

, IOC country code * Santa Rosa Airport (Argentina), in La Pampa province (IATA code RSA)

In science and technology

Biology, organic chemistry, and medicine

* Respiratory sinus arrhythmia, 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, partially characterised non-coding RNA from ''Staphylococcus aureus'' * Root System Architecture

Cryptography and security

RSA (cryptosystem) The RSA (Rivest–Shamir–Adleman) cryptosystem is a public-key cryptosystem, one of the oldest widely used for secure data transmission. The initialism "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, for factoring a set of semi-prime numbers ** RSA numbers, with two prime numbers as factors

Other uses in science and technology

* RSA (missile), a Swiss-developed surface-to-air missile system * Rational Software Architect, part of IBM Rational Application Developer * Remote supervisor adapter, an out-of-band management interface on IBM servers *''Revolver Stechkina-Avraamova'', a designation of the Russian OTs-01 Kobalt 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 profession, occupational education typically provided to servers, sellers and consumers of alcohol (drug), alcohol to prevent alcohol intoxication, intoxication, drunk driving and underage drinking. This trainin ...

in several Australian states *, French benefit for low-paid workers * New Hampshire Revised Statutes Annotated, an entire body of laws *

Runway safety area A runway safety area (RSA) or runway end safety area (RESA, if at the end of the runway) 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 runway end safety area, for aircraft {{Disambiguation