| Acronym | Definition |
|---|
| JRG➣Joint Review Group (US DoD) |
| JRG➣Johann-Rist-Gymnasium (German school) |
| JRG➣Japan Radio Glass (est. 1943) |
| JRG➣Junta Revolucionaria de Gobierno (Revolutionary Governing Junta; El Salvador) |
| JRG➣James River Grotto (National Speleological Society chapter; Lynchburg, VA) |
| JRG➣Jim Roberts Group |
| JRG➣Japan Railways Group |