MOS or Mos may refer to:


* MOSFET (metal–oxide–semiconductor field-effect transistor), also known as the MOS transistor * Metal–oxide–semiconductor, used to form a gate in MOSFETs * Mathematical Optimization Society * Model output statistics, a weather-forecasting technique * MOS (filmmaking), term for a scene that is "motor only sync" or "motor only shot", or jokingly, “mit out sound” * MOS Technology, a defunct semiconductor company * Mobile operating system, operating systems for mobile devices


* 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"

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


* 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, 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 and ) * 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" () 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

See also

* * Mo's Restaurants, American restaurant chain in Oregon * Mos Def, American hip-hop artist and actor * Mos Eisley, a fiction city which first appeared in ''Star Wars Episode 4: A New Hope'' * Man of Steel (disambiguation) * MDOS (disambiguation) * PC-MOS/386 * Molybdenum disulfide (MoS2) {{Disambiguation