| RCG | Netscape Newsgroup file 
| Others |
| RCG | Radiology Consulting Group
| Others |
| RCG | Random Comic Generator
| Others |
| RCG | Ras to Cas Generator
| Others |
| RCG | Re-formed Congregation Group
| Others |
| RCG | RE/MAX Commercial Group
| Others |
| RCG | Recent College Graduate
| Others |
| RCG | Recovery Coordinating Group
| Others |
| RCG | Red Communication Group
| Others |
| RCG | Regex Colored Glasses
| Others |
| RCG | Regulation Coast Guard
| Others |
| RCG | Renewables Consulting Group
| Others |
| RCG | Research Consulting Group
| Others |
| RCG | Resource Communications Group
| Others |
| RCG | Responsible Conduct of Gambling
| Others |
| RCG | Restorations, Commissions, and Gifts
| Others |
| RCG | Restored Church of God
| Others |
| RCG | Retail Coffee Grounds
| Others |
| RCG | Reverse Cow Girl
| Others |
| RCG | Reversible Core Grille
| Others |
| RCG | Revolutionary Communist Group
| Others |
| RCG | Richmond College Galle
| Others |
| RCG | Road Cross and Gravel
| Others |
| RCG | Road Cross Gravel
| Others |
| RCG | Rob Charlie and Glenn
| Others |
| RCG | Rob Charlie Glenn
| Others |
| RCG | Roll Cage
| Others |
| RCG | Rosenthal Collins Group
| Others |
| RCG | Round Card Girls
| Others |
| RCG | Royal Cliff Garden
| Others |
| RCG | Rudolf Christian Gribel
| Others |