| Abbreviation | Definition |
|---|---|
| RFCA | Run For a Cure Africa |
| RGN | Raad vir Geestewetenskaplike Navorsing |
| RHLF | Rural Housing Loan Fund |
| RIOT | Revival In Our Times |
| RISA | Recording Industry of South Africa |
| RMCA | Royal Museum for Central Africa |
| ROA | Regional Office for Africa |
| ROAP | Roster of African Professionals |
| ROAPE | Review of African Political Economy |
| ROEA | Regional Office of Eastern Africa |
| ROWA | Regional Office for West Africa |
| RSA | Republic South Africa |
| RSA | Republiek van Suid-Afrika (Republic of South Africa) |
| RSA | South Africa |
| RSF | Rapid Support Forces |
| RSSA | Royal Society of South Africa |
| RTA | return to Africa |
| RTB | Roots, Tubers and Bananas |
| RTRP | Regional Telecommunications Restructuring Program |
| RU | Rhodes-Universiteit |