GM

GM, Gm, g_m, or similar may refer to:

Places

Gunn & Moore, British sports equipment company
RGM-79 GM, a mobile suit series in the video game Mobile Suit Gundam
Grandmaster (chess)
Gamemaster or game master, a person officiating in a multiplayer role-playing game
GM – The Independent Fantasy Roleplaying Magazine

G minor, chords and scale in music
General MIDI (GM or GM 1), a standardized specification for Musical Instrument Digital Interface synthesizers, developed by the American MIDI Manufacturers Association (MMA) and the Japan MIDI Standards Committee (JMSC) and first published in 1991
GraphicsMagick, a fork of ImageMagick
Golden master, a stage in the software release life cycle, referring to a version to be distributed to customers, i.e. ready for release to manufacturing (RTM)
g_m, the notation for mutual conductance or transconductance (short for transfer conductance), an electronic component parameter

Google Maps, a web mapping service that can compute routes between places
General Motors, American automobile manufacturing company, founded September 16, 1908
- 2009–2011: Motors Liquidation Company
Zhejiang Geely Ming Industrial Co., Ltd. (Chinese: 浙江吉铭实业有限公司, common known as GM Motor), a motorcycle manufacturer founded in 1995
GM chassis or Gusenichnaya Machina, a Russian tracked vehicle chassis
Metacentric height, the distance between the center of gravity (G) and the metacenter (M) of a ship

Genital mutilation
Genetic modification (adjective: genetically modified), manipulation of an organism's genome
Silty gravel, in the Unified Soil Classification System
General Mills, American food manufacturing company
GM Sugar Uganda Limited

Geiger–Müller tube or G-M tube, a type of radiation detector
GM, a unit of two-photon absorption cross-section, named after Maria Goeppert Mayer
Gigametre or gigameter (Gm), one billion metres
Gram or gramme (historically sometimes abbreviated "gm", but now usually "g"), a metric unit of mass

Grand Marshal (RPI), the highest elected student leader of Rensselaer Polytechnic Institute
Grant-maintained school, a kind of state school in England and Wales, 1988–1998
Göttinger Miszellen, a scientific journal published by the Seminar für Ägyptologie und Koptologie (seminar for Egyptology and Coptology) of the University of Göttingen, Germany
Standard gravitational parameter $\mu =GM\$
The multiplicative group scheme, denoted G_m