| Acronym | Definition |
|---|
| GJ | Georg Jensen (artist) |
| GJ | Good Job |
| GJ | Grand Junction (Colorado) |
| GJ | Grenada |
| GJ | Gujarat (India) |
| GJ | Gigajoule (10^9 Joules) |
| GJ | Grüne Jugend (German: Green Youth) |
| GJ | Grapefruit Juice |
| GJ | Generic Java |
| GJ | Generic Java (language extension) |
| GJ | Gauss-Jacobi (mathematics) |
| GJ | Global Justice |
| GJ | Grape Juice |
| GJ | Gastrojejunostomy |
| GJ | Glassjaw (band) |
| GJ | Grape Jelly |
| GJ | Greatest Journal (web journal service) |
| GJ | Graduate Jeweler (Gemological Institute of America) |
| GJ | Gotta Jet |
| GJ | Glatting Jackson Kercher Anglin (Florida and Georgia community planning and design firm) |
| GJ | Gauss-Johnson (Engineering Building, University of Idaho) |
| GJ | Ghetto Jump (Metroid Prime 2 game) |
| GJ | Garcia Julia (Capital Federal, Argentina) |
| GJ | Gharjamai |
| GJ | Green Jellÿ (band) |
| GJ | Measure of Torsional Stiffness |
| GJ | Greenville and Johnsonville Railway Company |