GM, Gm or gm may stand for:

• General Motors
• General Motors railway station, a closed railway station in Melbourne, Australia
• General Mills
• The country of Gambia
• The General MIDI standard specification
• Genetically modified
• The Gambia (ISO 3166-1 alpha-2 country code)
• International Grandmaster in chess
• Game Maker game developing program
• Gamemaster or Game Master in play by mail games and role-playing games
• gigametre (Gm)
• General manager in sports (term is also used elsewhere, as in radio and television)
• Grindelwald Männlichen-Bahn in Maennlichen, Switzerland
• The RGM-79 GM mobile suit and its successors in the anime series Mobile Suit Gundam.
• Gmail