MSO

MSO is an abbreviation that may stand for:

Orchestras

• Madison Symphony Orchestra, of Madison, Wisconsin, USA
• Melbourne Symphony Orchestra, of Melbourne, Victoria, Australia
• Metropolitan Symphony Orchestra, of Minneapolis, Minnesota, USA
• Milwaukee Symphony Orchestra, of Milwaukee, Wisconsin, USA
• Montreal Symphony Orchestra, of Montreal, Quebec, Canada

Companies and organizations

• Mara Students' Organizations, a student umbrella of Mara people in Northeastern state of Mizoram and their presence around the world.
• Martha Stewart Living Omnimedia, a merchandising company founded by Martha Stewart
• Management services organization, an organization providing admin services for individual physicians
• Masters Swimming Ontario, organization for Masters swimmers in Ontario, Canada. Registers clubs and members, sanctions swim meets.
• Michigan Southern Railroad (1989), a wholly owned subsidiary of Pioneer Railcorp
• Mind Sports Organization, a vehicle for promoting mental-skill games
• Mitch Schneider Organization, a public relations company
• Multi system operator, an operator of multiple cable television systems
• Mennonite Sports Organization, an elementary sports program run by Lancaster Mennonite School.

Other uses

• a file format used by the Microsoft Outlook e-mail application
• Professor med særlige opgaver, an MSO professor is a position between associate and full professor in Danish universities
• Maritime Security Operations, a method of policing various illegal activities at sea
• Manufacturer Statement of Origin, a document of ownership, usually related to a motor vehicle
• Medical Support Officer, a rank within the British Army Royal Army Medical Corps
• Microsoft Office, a set of interrelated desktop applications, servers and services
• Missoula International Airport, public airport located in Montana, USA (IATA code: MSO)
• Monadic second-order logic, in mathematics
• Mountain Skies Observatory, an astronomical observatory Wyoming, USA
• Murashige and Skoog medium, a plant growth medium used in laboratories for cellular cultivation
• Minesweeper (ship), a class of naval warship designed to clear naval mines
• Moston railway station, a railway station in Greater Manchester, England (National Rail code: MSO)
• Mixed Service Organisation, Displaced Persons employed by the British Army on the Rhine in various positions up until the end of the Cold War
• Mysterious Space Objects, Fictional organization from The Addams Family original television series, Season 1, Ep 27: The Addams Family and the Spacemen
• Mixed Signal Oscilloscope
• Multiple system operator, a class of Cable Television service provider
• Mars Science Orbiter, a proposed spacraft to be sent to Mars

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