RSA

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, a Scottish institute of the Arts • Royal Society of Arts, a British charitable organisation, formally the Royal Society for the Encouragement of Arts, Manufactures and Commerce Military • Redstone Arsenal, 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 Serbian Army (1882–1918), army of the Kingdom of Serbia • 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, 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, Ireland • Russian Ski Association ==Places==

• Republic of South Africa, 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, in organic chemistry • Rsa RNA, partially characterised non-coding RNA from Staphylococcus aureus • Root System Architecture Cryptography and security • RSA (cryptosystem) (Rivest–Shamir–Adleman), for public-key encryption • RSA Conference, 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 • The Rational Speech Act framework in the study of pragmatics ==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 in several Australian states • , French benefit for low-paid workers • New Hampshire Revised Statutes Annotated, an entire body of laws • Runway safety area, or runway end safety area, for aircraft