| Abbreviation | Definition |
|---|---|
| GSR | Granite Series Rail |
| GSW(s) | GSW(s)gunshot wound(s) |
| GT | Grand Theft |
| GTA | Government Technical Adviser |
| GTP | Good To Police |
| GTW | Grand Theft Watercraft |
| GU | Genito-Urinary |
| GUNS | Gangsters United, Not Separated |
| GUPD | Georgetown University Police Department |
| GWB | Gangsta Wanna Be |
| GWB | Goon With Bombs |
| GWB | Great White Brotherhood |
| GYS | Great Yorkshire Show |
| H | Homicide |
| HA | House Arrest |
| HAU | Homicide Analysis Unit |
| HAZCHEM | HAZardous CHEMical |
| HB | Housing Bureau |
| HBM | Hitman Blood Money |
| HBWC | Hollow Based Wad Cutter |