RMS may refer to:
Places Ramstein Air Base, in Germany (IATA code RMS) (Republic of the South Moluccas), a self-proclaimed republic in the Maluku Islands, founded in 1950
Organizations Learned societies Ramanujan Mathematical Society, a learned society founded in 1985 in India Royal Medical Society, a learned society founded in 1737 at the University of Edinburgh Medical School Royal Meteorological Society, a learned society founded in 1850 in Aylesbury in Buckinghamshire Royal Microscopical Society, a learned society founded in 1839 in London, now headquartered in Oxford Russian Mineralogical Society, a learned society founded in 1817 in Saint Petersburg Russian Musical Society, a learned society founded in 1859 and disbanded in 1917
Schools United States Radnor Middle School, in Radnor, Pennsylvania Redwood Middle School (Saratoga, California) Rice Middle School, in Plano, Texas Richardson Middle School, in Chicago, Illinois Richland Middle School, in Richland Hills, Texas Riverwood Middle School, in Kingwood, Texas Robinson Middle School, in Plano, Texas Rocky Mountain semester, in Leadville, Colorado; now called High Mountain Institute Semester Romulus Middle School, in Romulus, Michigan Roosevelt Middle School (Oakland, California) Rosemount Middle School, in Rosemount, Minnesota Ridgely Middle School, in Lutherville, Maryland
Elsewhere Rambhakta Memorial School in Banepa, Kavre, Nepal Reims Management School, in Reims, France Robert May's School, in Hampshire, England The Royal Masonic School for Girls, in Hertfordshire, England Rutland Middle School, in British Columbia, Canada
Other organizations Hermès (Euronext Paris: RMS), a French luxury fashion house Railway Mail Service, a former US mail transportation service Raytheon Missile Systems, a former company which manufactured missiles Regroupement des militants syndicaux ("Trades-Union Militants Grouping"), a political organization in Quebec, Canada, in the 1970s Revenue Management Society, a British industry organisation Risk Management Solutions, a subsidiary of Moody's Corporation RMS, a prefix for Royal Mail Ships and aircraft, UK Roads and Maritime Services, a former agency of the New South Wales government, Australia Rotana Media Services, the advertising and marketing wing of Rotana Group Rotating Memory Systems, Inc., a defunct hard disk drive manufacturer Royal Society of Miniature Painters, Sculptors and Gravers, originally the Royal Miniatures Society, London
Science and technology Biology and medicine Rhabdomyosarcoma, a cancer of connective tissues Rostral migratory stream, one path that neuronal stem cells travel along to reach the olfactory bulb Relapsing Multiple Sclerosis
Computing Rate-monotonic scheduling, a scheduling technique in operating systems Record Management Services, file-management processes in OpenVMS and PDP-11 operating systems Record Management System, a persistent storage mechanism available to some Java ME configurations Rights Management Services, a component of MS Windows Server 2003
Other uses in science and technology Reconfigurable Manufacturing System, designed for rapid change in its structure Remote Manipulator System, a robotic arm on the Space Shuttle Residual mean square, a measure of the difference between data and a model of that data Revenue Management System (or revenue management software), a software system for managing occupancy in hotels and suchlike RMS (noise reduction) (), a Dolby-B-compatible compander in the former GDR in the 1980s Root mean square, a measure of the magnitude of a varying quantity Royal Microscopical Society thread, or society thread, a screw thread used for microscope objective lenses "Watt RMS", an erroneous term for "average power" used in audio measurements
Other uses Resilient Multi-mission Space STaR Shot program, a satellite defence program being developed by Airbus at Lot Fourteen in Adelaide, Australia The initials of Richard Matthew Stallman, a software freedom activist and computer programmer RMS (band), a British jazz/rock fusion band, formed in 1982 Royal Mail Ship, the ship prefix used for seagoing vessels that carry mail under contract to the British Royal Mail