MOS

MOS or Mos may refer to:

Technology

 * MOSFET (metal–oxide–semiconductor field-effect transistor), also known as the MOS transistor
 * Mathematical Optimization Society
 * Model output statistics, a weather-forecasting technique
 * MOS (filmmaking), a filmmaking jargon acronym
 * Mobile operating system, operating systems for mobile devices

Computing

 * Acorn MOS, an operating system used in the Acorn BBC computer range
 * Media Object Server, a protocol used in newsroom computer systems
 * Mean opinion score, a measure of the perceived quality of a signal
 * MOS (operating system), a Soviet Unix clone
 * My Oracle Support, a support site for the users of Oracle Corporation products, known until October 2010 as "MetaLink"
 * macOS, an operating system for Macs

Government and military

 * Master of the Sword, the title for the head of physical education at the U.S. Military Academy at West Point
 * Member of Service, any emergency responder (police officer, firefighter, emergency medical technician) that needs emergency help, usually over two-way radio
 * Military occupation specialty code, used by the U.S. military to identify a specific job
 * Ministry of Supply, former British government ministry that co-ordinated military supplies

Places

 * Ma On Shan (town), a town in the New Territories of Hong Kong
 * Ma On Shan station, MTR station code
 * Mos, Spain, a municipality in Galicia, Spain in the province of Pontevedra
 * Museum of Science (Boston) (MoS), a Boston, Massachusetts landmark, located in Science Park, a plot of land spanning the Charles River, USA

Companies and organizations

 * MOS (brand), American brand of organizational tools
 * MOS Technology, a defunct semiconductor company
 * Mos, a startup tech company founded by Amira Yahyaoui
 * MOS Burger, a fast-food restaurant chain that originated in Japan
 * The Mosaic Company (NYSE: MOS), American fertilizer and mining company

Other uses

 * Mos, an uncommon singular form of mores, widely observed social norms (from Latin mos and mōrēs)
 * Mos, a traditional dish of the Nivkh people
 * Mos language, an aboriginal Mon–Khmer language of Malaya and Thailand
 * Mannan oligosaccharide-based nutritional supplements
 * Manual of style, also known a style guide or stylebook; a guide for writing and sometimes also for layout and typography
 * Margin on services, a financial reporting method for Australian life insurance companies
 * Moment of symmetry, in music, same as well formed generated collection
 * MOS (gene), gene for a human protein expressed in testis during sperm formation
 * MOS, German vehicle registration plate district code for Neckar-Odenwald-Kreis
 * "Man on the street" (vox populi) segments in broadcasting
 * Mossi language ISO 639 alpha-2 language code
 * Morvan Syndrome (MoS) though usually referred to as MVS
 * MOS, minimum operating segment of a transportation system
 * Mos, nickname of Thai singer Patiparn Patavekarn, also referred to as Mos Patiparn
 * MoS, Motorways of the Sea, is a concept in the transport policy of the European Union