Other Transportation
- Generic Tilt-rotor, a type of aircraft that combines the vertical lift capability of a helicopter with the speed and range of a turboprop airplane
- Grand Trunk Railway, a railway system which operated in the Canadian provinces of Quebec and Ontario, as well as the American states of Connecticut, Maine, Massachusetts, New Hampshire, and Vermont
- Grand Trunk Road, one of South Asia's oldest and longest major roads, linking India to Pakistan
- GTR, the IATA airport code for the Golden Triangle Regional Airport in Columbus, Mississippi
Read more about this topic: GTR