G class or Class G may refer to:

Railways

  • NZR G class (1928), a type of steam locomotive used in New Zealand
  • Tasmanian Government Railways G class, a class of 0-4-2T steam locomotive used in Australia
  • V/Line G class, a class of diesel-electric locomotives
  • SECR G class, a class of 4-4-0 steam locomotives
  • Two types of diesel locomotives used by Córas Iompair Éireann:
  • CIÉ 601 Class
  • CIÉ 611 Class
  • Australian Standard Garratt
  • Metropolitan Railway G Class, a class of 0-6-4T steam locomotives
  • Victorian Railways G class, a class of narrow gauge locomotives
  • G-class Melbourne tram
  • G-class Sydney tram
  • WAGR G class, a class of 2-6-0 steam locomotives operated by the Western Australian Government Railways

Ships

  • G-class destroyer (disambiguation), several classes of ships
  • G-class frigate, one of the frigate classes of the Turkish Navy
  • G-class landing craft, a vessel in use by the Finnish Navy and the Swedish Navy
  • G-class submarine (disambiguation), several classes of ships
  • OOCL G-class container ship, a class of very large container ships.

Other uses

  • Class G, a class of airspace in various airspace classification systems
  • G-class blimp, a type of blimp built in America from 1935
  • Class G, a spectral class for stars
  • Class G amplifier, a class of electronic amplifiers usually used in high-power audio applications
  • Mercedes-Benz G-Class, a luxury SUV (sport utility vehicle)
  • Short G-class, a transport flying-boat
  • Google Classroom