| RGI | Radio Gate International 
| Others |
| RGI | Rajiv Gandhi International
| Others |
| RGI | Randolph Glacier Inventory
| Others |
| RGI | Rangiroa Island, Tuamotu Islands, French Polynesia, South Pacific
| Others |
| RGI | Rare Genomics Institute
| Others |
| RGI | Raybourn Group International
| Others |
| RGI | RealArcade game installer
| Others |
| RGI | Realty Growth Inc
| Others |
| RGI | Recommended For General Interchange
| Others |
| RGI | Reeder Graphics, Inc.
| Others |
| RGI | Registered Gas Installer
| Others |
| RGI | Registrar General of India
| Others |
| RGI | Rehg Group Inc
| Others |
| RGI | Reinventing Geospatial Inc
| Others |
| RGI | Religious Guidance For Indonesians
| Others |
| RGI | Renewables Grid Initiative
| Others |
| RGI | Rent Geared To Income
| Others |
| RGI | Reproductive Genetic Innovations
| Others |
| RGI | Reproductive Genetics Institute
| Others |
| RGI | Reproductive Gynecology Inc
| Others |
| RGI | Research Growth Initiative
| Others |
| RGI | Resistance Gene Identifier
| Others |
| RGI | Resolution Group International
| Others |
| RGI | Resource Governance Index
| Others |
| RGI | Resource Group International
| Others |
| RGI | Revenue Generated Index
| Others |
| RGI | Revenue Generation Index
| Others |
| RGI | Revenue Growth Index
| Others |
| RGI | Revenue Growth International, Ltd.
| Others |
| RGI | Richmond Group International
| Others |
| RGI | Rochester Gear Inc
| Others |
| RGI | Romulin Group, Inc.
| Others |
| RGI | Ruimte for Geoinformatie in
| Others |
| RGI | Rumbaugh Goodwin Institute
| Others |
| RGI | Rwanda Girls Initiative
| Others |