| Abbreviation | Definition |
|---|---|
| RTSC | Reuse Technology Support Centre |
| RTU | Rai Technology University |
| RTU | Rajasthan Technical University |
| RTU | Riga Technical University |
| RTU | Rizal Technological University |
| RU | Raffles University |
| RU | Rajshahi University |
| RU | Rhodes University |
| RU | Rice University |
| RU | Rider University |
| RU | Rockefeller University |
| RU | Rowan University |
| RU | Rutgers University |
| RU | Ryerson University |
| RUA | Royal University of Agriculture |
| RUAS | Ryerson University Accounting Society |
| RUB | Royal University of Bhutan |
| RUB | Ruhr University Bochum |
| RUB | Ruhr-Universität Bochum |
| RUBC | Reading University Boat Club |