Gem (disambiguation)

A gem, or gemstone, is a cut rock or mineral.

Gem or GEM may also refer to:

Arts, entertainment and media

GEM (band), a Japanese idol girl group
Gem (American band), with Doug Gillard
Gem (Dutch band), a rock band
G.E.M. (Gloria Tang Sze-wing, born 1991), a Chinese singer and songwriter
- G.E.M. (EP), 2008
Gem (album), by Beni Arashiro, 2007
"The Gem", a song by Priestess from the 2009 album Prior to the Fire

GEM Motoring Assist, a British road safety and breakdown recovery organisation
G. E. M. Membership Department Stores, a chain of discount stores in the U.S. and Canada
Global Electric Motorcars, an American manufacturer of low-speed vehicles
GEM, musical instruments by Generalmusic
Global Energy Monitor, an American organisation which catalogs energy-related projects
Global Earthquake Model, a public–private partnership to develop risk assessment software
Gordon–Evernham Motorsports, a NASCAR Busch Series race team
Grenoble École de Management, a French graduate business school

GEM (gene), GTP-binding protein
Gem, a format of the RubyGems package manager for Ruby
Gem, codename for the PlayStation Move controller
Gem, the game engine of Best Way
GEM of Egypt, a power shovel used for strip mining
Geminal, in chemistry
Gemini (constellation), in astronomy
Gas electron multiplier, a type of gaseous ionization detector
German equatorial mount, for astronomical telescopes and cameras
GEM (desktop environment) (Graphics Environment Manager), a software operating environment from Digital Research
GEM, a compiler backend created for DEC MICA and later used in OpenVMS and Tru64.
Graphics Environment for Multimedia, graphics software
Global Environmental Multiscale Model, a meteorological forecasting system
Globally Executable MHP, a DVB specification for TV
Graphics Execution Manager, video software
Graphite-Epoxy Motor, a series of solid rocket boosters
Gravitoelectromagnetism, formal analogies between the equations for electromagnetism and relativistic gravitation
Gyrokinetic ElectroMagnetic, a plasma turbulence simulation
SECS/GEM, semiconductor's equipment interface protocol for equipment-to-host data communications

Gem (automobile), by the Gem Motor Car Company 1917–1919
Rolls-Royce Gem, a helicopter engine
Gem 4/4, a Rhaetian Railway locomotive class
Ground effect machine (GEM), a hovercraft
USS Gem (SP-41), a U.S. Navy patrol vessel 1917-1919
GM GEM platform, Global Emerging Markets automotive platform used by General Motors

Gem (moth), of the family Geometridae
Gem, the most common paper clip design
Gender Empowerment Measure, an index designed to measure of gender equality
Generalized Expertise Measure, a psychometric measure of expertise
The Germanic languages (ISO 639-1 code gem)
Global Entrepreneurship Monitor, a research project into entrepreneurial activity
Grand Egyptian Museum, or the Giza Museum, a museum of artifacts of ancient Egypt
Growth Enterprise Market, a board of the Stock Exchange of Hong Kong