RSO or R.S.O. may refer to:

Roles and titles

Range safety In rocketry, range safety or flight safety is ensured by monitoring the flight paths of missiles and launch vehicles, and enforcing strict guidelines for rocket construction and ground-based operations. Various measures are implemented to protect ...

officer, a person responsible for the safe use of rocket vehicles * Radiation Safety Officer, a person responsible for the safe use of radiation and radioactive materials *

Regional Security Officer A regional security officer (RSO) is a special agent of the U.S. Diplomatic Security Service (DSS) in charge of a regional security office. The RSO is the principal security attaché and advisor to the U.S. ambassador at American embassies an ...

, a Diplomatic Security Service Special Agent in charge of security at a US embassy * Regional Security Office, office in a US embassy or consulate for the Diplomatic Security Service * ', Knight of the

Order of the Sword The Royal Order of the Sword (officially: ''Royal Order of the Sword''; Swedish: ''Kungliga Svärdsorden'') is a Swedish order of chivalry and military decoration created by King Frederick I of Sweden on 23 February 1748, together with the Or ...

* Reconnaissance systems officer, operator of surveillance systems and equipment on a

Lockheed SR-71 Blackbird The Lockheed SR-71 "Blackbird" is a retired long-range, high-altitude, Mach 3+ strategic reconnaissance aircraft developed and manufactured by the American aerospace company Lockheed Corporation. Its nicknames include " Blackbird" and ...

aircraft

Organisations

* "Radio Symphony Orchestra", used by a number of orchestras: **

Danish National Symphony Orchestra The Danish National Symphony Orchestra (DNSO; ), is a Danish orchestra based in Copenhagen. The DNSO is the principal orchestra of DR (Danish Broadcasting Corporation). The DRSO is based at the Koncerthuset () concert hall in Copenhagen. Histo ...

, based in Denmark ** North German Radio Symphony Orchestra, based in Hamburg, Germany **

Stuttgart Radio Symphony Orchestra The Stuttgart Radio Symphony Orchestra (German: ''Radio-Sinfonieorchester Stuttgart des SWR'') was a German radio orchestra based in Stuttgart in Germany. History The ensemble was founded in 1945 by American occupation authorities as the orches ...

, based in Stuttgart, Germany **

Bavarian Radio Symphony Orchestra The Bavarian Radio Symphony Orchestra (, BRSO) is a German radio orchestra. Based in Munich, Germany, it is one of the city's four orchestras. The BRSO is one of two full-size symphony orchestras operated under the auspices of Bayerischer Rundf ...

, based in Munich, Germany ** Frankfurt Radio Symphony Orchestra, based in Frankfurt, Germany **

Finnish Radio Symphony Orchestra The Finnish Radio Symphony Orchestra (Finnish: ''Radion sinfoniaorkesteri'', Swedish: ''Radions symfoniorkester''; abbreviated as RSO) is a Finnish Radio orchestra, broadcast orchestra based in Helsinki, and the orchestra of the Finnish Broadcasti ...

** Swedish Radio Symphony Orchestra ** Vienna Radio Symphony Orchestra * Richardson Symphony Orchestra, based in Richardson, Texas * Roanoke Symphony Orchestra, based in Roanoke, Virginia * Rogers Sportsnet Ontario, a television station in Ontario, Canada *

RSO Records RSO Records was a record label formed by rock and roll and musical theatre impresario Robert Stigwood and record executive Al Coury in 1973. The letters "RSO" stood for the Robert Stigwood Organisation. RSO managed the careers of several ma ...

, a record label formed by Robert Stigwood in the late 1960s * Rohingya Solidarity Organisation, a political organization and former insurgent group in Myanmar (Burma)

Military technology

* '' Raupenschlepper, Ost'', a fully tracked World War II German artillery tractor * '' Radschlepper Ost'', a wheeled World War II German artillery tractor

Other

* Railway Sub Office (1855–1905), a British Royal Mail office which received mail directly from rail transport *

Reactive Search Optimization LIONsolver is an integrated software for data mining, business intelligence, analytics, and modeling and reactive business intelligence approach. A non-profit version is also available as LIONoso. LIONsolver is used to build models, visualize ...

, problem-solving methods with integrated online machine-learning capabilities *

Revised Statutes of Ontario The Revised Statutes of Ontario (RSO; , ) is the name of several consolidations of public acts in the Canadian province of Ontario, promulgated approximately decennially from 1877 to 1990. Each revision contains a consolidated version of all non ...

, the provincial laws of Ontario, Canada * Registered sex offender, a person listed on a sex offender registry * Republic of

South Ossetia South Ossetia, officially the Republic of South Ossetia or the State of Alania, is a landlocked country in the South Caucasus with International recognition of Abkhazia and South Ossetia, partial diplomatic recognition. It has an offici ...

, a partially recognised country in the South Caucasus * Resident Space Object, any man-made object in Earth orbit no longer used by anyone * RSO, musical duo consisting of American musician

Richie Sambora Richard Stephen Sambora (born July 11, 1959) is an American musician, singer, and songwriter, best known as the lead guitarist of the rock band Bon Jovi from 1983 to 2013. He and lead singer Jon Bon Jovi formed the main songwriting unit for the ...

and Australian musician

Orianthi Orianthi Penny Panagaris (born 22 January 1985), known mononymously as Orianthi, is an Australian guitarist, singer and songwriter. Her 2009 debut single " According to You" peaked at No. 3 in Japan, No. 8 in Australia and No. 17 in the US; her ...

* Rick Simpson Oil, a form of cannabis concentrate *

Red Star OS Red Star OS () is a North Korean Linux distribution, with development first starting in 1998 at the Korea Computer Center (KCC). History Prior to Red Star OS' release, computers in North Korea typically used modified versions of Microsoft ...

, also abbreviated as RSOS, is a North Korean operating system {{disambig