GM

GM or Gm may refer to:

Companies

• General Motors, US automobile manufacturing company
• Gunn & Moore, UK sports equipment company

Places

• The Gambia's ISO 3166 code
• Germany's FIPS 10-4 country code

People

• Gunner's mate, US Navy rating
• General manager
• Grandmaster (chess)
• Gamemaster or Game Master, a person officiating in a multiplayer role-playing game

Science and measurement

• Geiger–Müller tube or G-M tube, radiation detector
• Genetic modification or Genetically Modified, manipulation of an organism's genome
• Gigametre or gigameter (Gm), one billion metres
• Metacentric height, related to ship stability
• Standard gravitational parameter $\mu=GM \$
• Transconductance, electronic component parameter
• GM, the Unified Soil Classification System symbol for silty gravel

Other uses

• Good Morning
• Gm (digraph)
• RGM-79 GM, a mobile suit series in Mobile Suit Gundam
• General MIDI, a standardized specification for music synthesizers
• George Medal, UK civil decoration for acts of great bravery
• GM chassis or Gusenichnaya Machina, a Russian tracked vehicle chassis
• gold master, a version of software to be distributed to customers, i.e. ready for release to manufacturing
• Genital mutilation

See also

• GM1, a ganglioside in brain biochemistry
• Gram, a unit of mass, correctly abbreviated "g" rather than "gm"