| Abbreviation | Definition |
|---|---|
| RTC | Remote Time Clock |
| RTC | Remote Tower Centre |
| RTC | Renaissance Training Center |
| RTC | Reservation Telephone Coop |
| RTC | Reservation Telephone Cooperative |
| RTC | Residual Terrain Correction |
| RTC | Responsible Thinking Classroom |
| RTC | Retro Tier Change |
| RTC | Rich Text Compressed |
| RTC | Ringgold Telephone Company |
| RTC | Rochester Telephone Company |
| RTC | Ros Taylor Company |
| RTC | Round Table Companies |
| RTC | Route To Core |
| RTC | Ruby Text Container |
| RTC | Run This City |
| RTCA | Race Track Chaplaincy of America |
| RTCA | Radio and Television Correspondents Association |
| RTCA | Radon Testing Corporation of America |
| RTCA | Real Time Cell Analyzer |