Others
- In the D.I.C.E. (TV series), an acknowledgement response used by D.I.C.E. members, which is similar to FAB in the Thunderbirds TV series
- Global Technical Regulation(s), a set of vehicle legislative requirements that are being created by the United Nations Economic Commission for Europe World Forum for Harmonization of Vehicle Regulations
- GPS Timing Receiver, specialized GPS receivers that can provide timing with an accuracy better than 100 nanoseconds
- GTR-18A, also DGTR-18A and Smokey Sam, an inert training rocket, developed at the U.S. Naval Weapons Center, for simulating Surface to Air Missiles launches
- SMS language for Got To Run
- GTR Group, the company presently known as Mad Catz
- Green tree reservoir
Read more about this topic: GTR