| Abbreviation | Definition |
|---|---|
| GPL | Genetic Programming Layer |
| GPMC | Group Policy Management Console |
| GPON | Gigabit Passive Optical Network |
| GPSR | Global Positioning System Receiver |
| GPSR | Greedy Perimeter Stateless Routing |
| GRACE | Global Remote Access Control Equipment |
| GRAND | GOOS Regional Alliances Networking Development |
| GRD | Global Resource Director |
| GRE | Generic Route Encapsulation |
| GRE | Generic Routing Encapsulation |
| GRIP | Generic Remote Invocation Protocol |
| GRJ | Gateway ReJect |
| GRN | Global Recordings Network |
| GRN | Global Router Network |
| GRN | Graduate Research Network |
| GRN | Guadalupe Radio Network |
| GRP | Globe Replication Protocol |
| GRQ | Gatekeeper Discovery Request |
| GRT | Generic Real Time |
| GS | Gateway Server |