GEM

• Gas Electron Multiplier
• Gender Empowerment Measure
• Generable (sic) Enigmatic Matrix from the anime and manga My-Otome (see List of My-Otome terminology)
• Generalized Empirical Method — from Bernard Lonergan, also known as critical realism
• Generalized Expertise Measure
• Generic Model for Communications and Control of Manufacturing Equipment
• Genetically Engineered Microorganism
• GEneral Music — an Italian manufacturer of organs, synths and keyboards, formerly 'Galanti Electro Music'. Brands from the same manufacturer ELKA and LEM.
• Geographically Established Market
• Gillett Evernham Motorsports
• Global Electric Motorcars
• Global Environmental Multiscale Model
• Global Entrepreneurship Monitor — the most comprehensive study of global entrepreneursip trends, conducted annually by the GEM Consortium, with 39 member countries
• Globally Executable MHP, a digital television specification
• Glycosphingolipid-enriched microdomains, in Biology. Also known as Lipid raft.
• Goddard Earth Model — a model of the Earth's gravity field
• Gordon/Evernham Motorsports
• GPON encapsulation method — a method of encapsulation for GPON (Gigabit Passive Optical Network)
• Grand Egyptian Museum
• Graphical Environment Manager — a windowing system created by Digital Research, Inc. (DRI)
• Graphics Environment for Multimedia — a Pure data package for 3D graphics
• Graphite-Epoxy Motor — a solid rocket motor used for supplemental thrust on several space launch vehicles
• Gravitoelectromagnetism — deals with the theory of field effects due to moving masses
• Grenoble Ecole de Management — the Grenoble Graduate School of Management
• Ground effect machines also known as Hovercraft.
• Growth Enterprise Market of Hong Kong Stock Exchange
• Guideline Elements Model — an XML-based model for storing clinical guideline information
• Gyrokinetic ElectroMagnetic A global electromagnetic gyrokinetic simulation code for studying tokamak turbulence

See also: Gem