| Acronym | Definition |
|---|
| RAG | Red, Amber, Green |
| RAG | Real Academia Galega (Galician: Royal Galician Academy; Galicia, Spain) |
| RAG | Richmond Art Gallery (Canada) |
| RAG | Rescue a Golden (dogs) |
| RAG | Ring Again |
| RAG | Registration and Advisory Group |
| RAG | Round Robin Arbiter Generator |
| RAG | Residents Action Group |
| RAG | Ruhrkohle AG |
| RAG | Risk Assessment Group |
| RAG | Radiocommunication Advisory Group |
| RAG | Research and Analysis Group (Office of Manpower Economics; UK) |
| RAG | Recombinase-Activating Gene |
| RAG | Replacement Air Group |
| RAG | Regional Associations of Grantmakers |
| RAG | Receive and Give |
| RAG | Remember and Give |
| RAG | Row Address Generator |
| RAG | River Assault Group |
| RAG | Return Air Grill (HVAC) |
| RAG | Regulation Advisory Group (UK) |
| RAG | Réseau d'Alimentation Générale (French utilities network) |
| RAG | Regimental Artillery Group (OPFOR) |
| RAG | Risk Advisory Group |
| RAG | Resource Allocation Group (tunnel between MDG and HA) |
| RAG | Runway Arresting Gear (aviation) |
| RAG | Ring Airfoil Grenade |
| RAG | Round-Robin Arbiter Generator |
| RAG | Red/Amber/Green report (quick status of a program/project) |
| RAG | Removal of Aquatic Growth |
| RAG | Raising & Giving (UK student charitable organization) |
| RAG | Rémunérations Annuelles Garanties (French: Annual Remuneration Rights) |
| RAG | Radial Artery Graft |
| RAG | Regional Aleph Godol |
| RAG | Réaction Alcalis-Granulats (French: Alkali-Aggregate Reaction) |
| RAG | Region Adjacent Graph |
| RAG | regular array grammar |
| RAG | Risk Assessment Guideline |
| RAG | Reserve Air Group |
| RAG | Requirements Assessment Group |
| RAG | Random Acronym Generator |
| RAG | Requirements Advisory Group |
| RAG | Repair Parts Analysis Group (US Navy) |
| RAG | Red Arrogant Git (UK) |
| RAG | Remote Access Gateway |
| RAG | Ramgavar Azadagan Gusaktsoutioun (Armenian Ramgavar Party) |
| RAG | Research Associate in Geology |