GMT may mean:

• Greenwich Mean Time
• Generic Mapping Tools in graphical computing
• Geometric measure theory
• Giant Magellan Telescope
• G:MT - Greenwich Mean Time, a 1999 film
• GMT Games
• GMT Records, an imprint/sub-label of Aozora Records
• Goodman Property Trust, the New Zealand division of the Goodman Group, Australia.
• Grosmont railway station, England; National Rail station code GMT
• Guy McCoy Tormé, a British rock-band
• Goodman, Martinez, Thompson correlation, the most commonly accepted correlation between the Mesoamerican Long Count calendar and the Julian calendar
• Greater Manchester Transport, the name used by the transport authority in Greater Manchester, England, UK (1974-1986).

This disambiguation page lists articles associated with the same title. If an internal link led you here, you may wish to change the link to point directly to the intended article.