MGS

MGS may refer to:

Schools

 * Maidstone Grammar School, Kent, England, UK
 * Manchester Grammar School, England, UK
 * Mayo Clinic Graduate School of Biomedical Sciences, U.S.
 * Melbourne Grammar School, Australia
 * Meldorfer Gelehrtenschule, Germany
 * Middleton Grange School, New Zealand

Science

 * Magnesium sulfide, an inorganic chemical compound
 * Mars Global Surveyor, an American spacecraft launched in 1996
 * Medial gastrocnemius strain, an injury of the gastrocnemius muscle in the calf
 * Modelling of General Systems, a domain-specific language for biological systems
 * Modified Gram-Schmidt, a mathematical method for orthogonalizing a set of vectors; see

Video games

 * Metal Gear Solid, another name for the 1987 stealth action video game series Metal Gear
 * Metal Gear Solid (1998 video game), a stealth action video game in the Metal Gear series

Other uses

 * M1128 Mobile Gun System, an armored fighting vehicle
 * Microsoft Game Studios, a multinational video game and digital entertainment company now called Xbox Game Studios
 * MGS (TV station)