| Abbreviation | Definition |
|---|---|
| GARA | General Aviation Revitalization Act |
| GAS | Gang Anti-Social |
| GAY | Gates And Young |
| GB | Gun Broker |
| GBC | Green Brook Crew |
| GBH | Grievous Bodily Harm |
| GBI | Great Bodily Injury |
| GBI | Guilty But Insane |
| GC | Grandfather Clause |
| GC | Grasp Corpus |
| GCC | Gas Chamber Crew |
| GCCT | Georgia Court Competency Test |
| GCCT-MSH | Georgia Court Competency Test - Mississippi State Hospital |
| GCK | Good Clean Killing |
| GCR | General Court Rules |
| GE | Graphically Enhanced |
| GESC | Guaranteed Energy Savings Contract |
| GEZ | Gebuehren EinzugsZentrale ( German Mafia) |
| GF | Guilt Free |
| GFA | Grounds For Assault |