RMS may refer to:

Science and technology[link]

• Root mean square, a measure of the spread of a quantity

• Watt RMS, often referred to as "RMS", a root mean square related to average audio power

• Rate-monotonic scheduling, a scheduling technique in operating systems
• Reconfigurable Manufacturing System, a system designed to respond to changes in market conditions or customer demand
• Any system that implements records management

• Record Management Services, in OpenVMS
• Record Management System, a persistent storage mechanism available to some Java ME configurations

• Remote Manipulator System, a mechanical arm of the Space Shuttle that maneuvers payloads
• Rights Management Services, a component of MS Windows Server 2003
• Rostral migratory stream, leading new neurons to the olfactory bulb
• RMS thread, also known as society thread, is a special 0.8"-36 Whitworth thread form used for microscope objective lenses. It is named after the Royal Microscopical Society

People, groups, and organizations[link]

• Railway Mail Service, US mail transportation service until the mid-20th century
• Regroupement des militants syndicaux, a political organization
• Republik Maluku Selatan, a separatist movement in Indonesia that proclaimed an independent "Republic of the South Moluccas" in the 1950s
• Richard Matthew Stallman (sometimes abbreviated "rms"), founder of the GNU Project
• Royal Medical Society
• Royal Meteorological Society
• Royal Microscopical Society, at the forefront of new ideas and developments in microscopy and imaging
• Royal Society of Miniature Painters Sculptors and Gravers, known as the Royal Miniatures Society
• RMS (band), a jazz/rock fusion band
• Russian Mineralogical Society
• Russian Musical Society, an organisation founded in 1859 and disbanded in 1917.
• Records Management Society, now known as the Information and Records Management Society.
• Roads and Maritime Services
• Ramanujan Mathematical Society

Companies[link]

• Raytheon Missile Systems
• Rotana Media Services, the advertising and marketing wing of Rotana Group
• RMS Communications, a broadband and cable TV component supplier
• Risk Management Solutions, a catastrophe risk modeling company, subsidiary of Daily Mail and General Trust

Schools[link]

• Radnor Middle School, in Radnor, Pennsylvania, USA
• Reims Management School, in Reims, France
• Richland Middle School, in Richland Hills, Texas, USA
• Robert May's School, in Hampshire, England
• Rocky Mountain semester, semester school in Leadville, Colorado, USA. now called High Mountain Institute Semester
• Romulus Middle School, in Romulus, Michigan, USA
• Roosevelt Middle School (Oakland, California), in Oakland, California, USA
• Royal Masonic School, Hertfordshire, England
• Rice Middle School, in Plano, Texas, USA
• Robinson Middle School, in Plano, Texas, USA
• Rosemount Middle School, in Rosemount, Minnesota, USA
• Riverwood Middle School, in Kingwood, Texas, USA

Other[link]

• Relocation services, employee relocation firms
• Royal Mail Ship or Steamer, a ship prefix for vessels that carry mail under contract to the British Royal Mail
• Royal Melbourne Show
• The Rachel Maddow Show (radio), a radio show on the now-defunct Air America Media network
• The Rachel Maddow Show (TV series), a television show on MSNBC
• Santiago Metropolitan Region (Región Metropolitana de Santiago) in Chile
• rms, Romanian Sign Language ISO 639 code
• Ramstein Air Base - IATA code

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