| Acronym | Definition |
|---|
| GREAT | Gang Resistance Education And Training |
| GREAT | Graphical Environment and Desktop |
| GREAT | German Receiver for Astronomy at Terahertz Frequencies (spectroscopy project) |
| GREAT | Great River Environmental Action Team |
| GREAT | Greyhound Rescue and Adoptions of Tampa Bay (Tampa Bay, Florida) |
| GREAT | Greenville Area Transit |
| GREAT | Get Really Excited About Today |
| GREAT | Gulf Reef Environmental Action Team |
| GREAT | Guaranteed Reduced Exchange Access Tariffs (ALTS) |
| GREAT | General Record of Enforcement Actions Tracked |
| GREAT | Greet React Escort Assist Thank (mnemonic) |
| GREAT | Gills Rock Entertainment Arts Tour (Wisconsin) |