| Abbreviation | Definition |
|---|---|
| RFT | Rapid Fire Theatre |
| RHTC | Robin Hood Theatre Company |
| RLT | Reno Little Theater |
| RLT | Rogers Little Theater |
| RLT | Rome Little Theatre |
| RLTT | Road Less Traveled Theatre |
| RMRT | Rocky Mountain Repertory Theatre |
| RMTC | Rainhill Musical Theatre Company |
| RPST | River Place Student Theatre |
| RPT | Percussion Theater |
| RRRRT | Red Rock Retro Radio Theatre |
| RTCC | Richmond Theatre Critics Circle |
| RTOP | Regional Theatre Of the Palouse |
| RTS | Ready Theatre Systems |
| RUR | Rossum's Universal Robots |
| SACT | St Albert Children's Theatre |
| SAFEH | H stands for HOSPITAL. SafeH Electromedicals is a company that deals in turnkey Hospital projects. B |
| SATC | Scandinavian American Theater Company |
| SBMT | South Bay Musical Theatre |
| SBST | Swaffham Bulbeck Summer Theatre |