| Abbreviation | Definition |
|---|---|
| RSY | Regular School Year |
| RT | Red Tape |
| RT | Resolved That |
| RT | Round Table |
| RTA | Returned To Australia |
| RTAC | Regional Technical Aid Center |
| RTAO | Revenue Travel Assignment Order |
| RTAW | Report on The American Workforce |
| RTB | Rural Telephone Bank |
| RTC | Regional Training Center |
| RTC | Right To Censor |
| RTCM | Radio Technical Commission For Maritime |
| RTD | Reutilization Transfer And Donation |
| RTE | Real Time Economy |
| RTFP | Request for Technical and Financial Proposals |
| RTK | Right To Know |
| RTS | Required To Save |
| RTTD | Race to the Top District |
| RUF | Revolutionary United Front |
| RUR | Rural |