| Acronym | Definition |
|---|
| RBG | Roseburg (Amtrak station code; Roseburg, OR) |
| RBG | Red Blue Gold |
| RBG | Random Bit Generator (algorithm) |
| RBG | Reblog |
| RBG | Royal Botanical Gardens |
| RBG | Revolutionary But Gangsta (Dead Prez album) |
| RBG | Red Blue and Green (primary colors of light as perceived by humans; less common, usually seen as RGB) |
| RBG | Red Black and Green |
| RBG | Regalbediengerät (machine for moving pallets in an automatic warehouse) |
| RBG | Ruth Bader Ginsburg (US Supreme Court justice) |
| RBG | Rubber Band Gun |
| RBG | Random Blood Glucose |
| RBG | Réseau des Boutiques de Gestion (French: Network of Management Shops) |
| RBG | Rock Bottom Golf (website) |
| RBG | Rhema Broadcasting Group (New Zealand) |
| RBG | Riverboat Gamblers (Texas punk rock band) |
| RBG | Redundant Building Grant (UK) |
| RBG | Really Big Gun |
| RBG | Rather Be Giraffes (Brandeis University A Cappella Group) |
| RBG | Runebranded Girdle (gaming) |
| RBG | Refrigerated Baked Goods |
| RBG | Really Bad Game |
| RBG | Rocket Boosted Glider |
| RBG | Righteous Black Guerillas (band) |