| RG | 1bit B&W 4bit CMYK Raster Graphics format 
| Others |
| RG | Rabies Glycoprotein
| Others |
| RG | Race Gas
| Others |
| RG | Rachel Grace
| Others |
| RG | Racial Gerrymandering
| Others |
| RG | Radial Ground
| Others |
| RG | Radio Government
| Others |
| RG | Radio Grade
| Others |
| RG | Radio Guide
| Others |
| RG | Radius of Gyration
| Others |
| RG | Radway Green
| Others |
| RG | Ragusa (Provence)
| Others |
| RG | Rajiv Gandhi
| Others |
| RG | Random Genotypes
| Others |
| RG | Random Guess
| Others |
| RG | Random Guy
| Others |
| RG | Ranked Game
| Others |
| RG | Rapid Gravity
| Others |
| RG | Rare Gas
| Others |
| RG | Rat Games
| Others |
| RG | Rate Gyro
| Others |
| RG | Read Group
| Others |
| RG | Reader Group
| Others |
| RG | Readiness Group
| Others |
| RG | Real Gay
| Others |
| RG | Real Good
| Others |
| RG | Real Grade
| Others |
| RG | Real Gun
| Others |
| RG | Really Good
| Others |
| RG | Really Gorgeous
| Others |
| RG | Really Great
| Others |
| RG | Really Grouchy
| Others |
| RG | Really Gud
| Others |
| RG | Rear Gear
| Others |
| RG | Receiver General
| Others |
| RG | Rechnung German
| Others |
| RG | Reconstitution Group
| Others |
| RG | Record Group
| Others |
| RG | Record Groups
| Others |
| RG | Recording Gain
| Others |
| RG | Rectractable Gear
| Others |
| RG | Red Glass
| Others |
| RG | Reel Gear
| Others |
| RG | Reference Group
| Others |
| RG | Refractory Grade
| Others |
| RG | Reginald Grundy
| Others |
| RG | Regional Gathering
| Others |
| RG | Registered Grade
| Others |
| RG | Registrar General
| Others |
| RG | Registro Geral
| Others |
| RG | ReGression
| Others |
| RG | Regression Graph
| Others |
| RG | Regression Graphics
| Others |
| RG | Regular Guy
| Others |
| RG | Regulatory Guide
| Others |
| RG | regummed
| Others |
| RG | Remember the Gear
| Others |
| RG | Renegotiation Gains
| Others |
| RG | Renormalization Group
| Others |
| RG | Repair Grade
| Others |
| RG | Request Granted
| Others |
| RG | Rescher-Gaines logic
| Others |
| RG | Residential Gateway
| Others |
| RG | Resource Guide
| Others |
| RG | Retired General
| Others |
| RG | Retractable Gear
| Others |
| RG | Rhythm Guided
| Others |
| RG | Rhythmic Gymnastics
| Others |
| RG | Richard Goodall
| Others |
| RG | Richard Guerard
| Others |
| RG | Richie Ginther
| Others |
| RG | Right Guard
| Others |
| RG | Ring Gauge
| Others |
| RG | Rio Grande
| Others |
| RG | Risk Grade
| Others |
| RG | Rive Gauche
| Others |
| RG | River Getaway
| Others |
| RG | Roadstar Guitar
| Others |
| RG | Robbie Ginepri
| Others |
| RG | Robert Golden
| Others |
| RG | Robert Grant
| Others |
| RG | Robert Grosseteste
| Others |
| RG | Roberto Gucci
| Others |
| RG | Roberts Grove
| Others |
| RG | Rochester Gamers
| Others |
| RG | Rock Guitar
| Others |
| RG | Rocket Girl
| Others |
| RG | Roentgenium
| Element |
| RG | Roger Gary
| Others |
| RG | Rolling Guidance
| Others |
| RG | Rotating Gobo projector
| Others |
| RG | Rough Grade
| Others |
| RG | Roughrider Genetics
| Others |
| RG | Royal Giant (clash royale)
| Others |
| RG | Royal Guard
| Others |
| RG | Rude Guy
| Others |
| RG | Rufus Grey
| Others |
| RG | Russ Gibb
| Others |