| RGS | Radclyffe Global Security 
| Others |
| RGS | Raffles Girls School
| Others |
| RGS | Raffles Girls School (Secondary)
| Others |
| RGS | Raffles Girls' School
| Others |
| RGS | Rand Graduate School
| Others |
| RGS | REAL GDPR Software
| Others |
| RGS | Real God Series
| Others |
| RGS | Real Good Service
| Others |
| RGS | Real Goods Solar
| Others |
| RGS | Real Government Spending
| Others |
| RGS | Really Good Sh*t
| Others |
| RGS | Reflection Grating Spectrometer
| Others |
| RGS | Reflection Grating Spectrometers
| Others |
| RGS | Regal Gran Sport
| Others |
| RGS | Regional Government Services
| Others |
| RGS | Regulator of G Protein Signaling
| Others |
| RGS | Rehabilitation Gaming System
| Others |
| RGS | Reliant Global Solulutios
| Others |
| RGS | Remote Game Server
| Others |
| RGS | Remote Geospatial Intelligence Services
| Others |
| RGS | Remote Graphics Software
| Others |
| RGS | Renault Grand Scenic
| Others |
| RGS | repeated Gram Schmidt
| Others |
| RGS | Resource Gathering Systems
| Others |
| RGS | Respiratory Gated System
| Others |
| RGS | Response Group
| Others |
| RGS | Retirement Government Specialist
| Others |
| RGS | Revenue Generated per Subscriber
| Others |
| RGS | Richard Gaylard Shattock
| Others |
| RGS | Rickis Golden Star
| Others |
| RGS | right guards And sometimes
| Others |
| RGS | Rigid Galvanized Steel
| Others |
| RGS | Ring Set
| Others |
| RGS | Rio Grande Southern Railroad
| Others |
| RGS | River Of Golden Sliptingers
| Others |
| RGS | Rochester Genealogical Society
| Others |
| RGS | Rocketeer Games Studio
| Others |
| RGS | Rockhampton Grammar School
| Others |
| RGS | Rollinsford Grade School
| Others |
| RGS | Root Growth Stimulator
| Others |
| RGS | Route Guidance Standalone
| Others |
| RGS | Route Guidance System
| Others |
| RGS | Roy Gripske and Sons
| Others |
| RGS | Royal Gay Society
| Others |
| RGS | Royal Geographic Society
| Others |
| RGS | Royal Geographical Society
| Others |
| RGS | Royal Grammar School
| Others |
| RGS | Ruffed Grouse Society
| Others |
| RGS | Ruhr Graduate School
| Others |
| RGS | Russell Global Sectors
| Others |
| RGS | Sisters of the Good Shepherd
| Others |