| Abbreviation | Definition |
|---|---|
| ROMAN | IEEE International Workshop on RObot and HuMAN Communications |
| RONC | Regional Oncology Nursing Conference |
| RRAC | Red River Athletic Conference |
| RRCON | Joint ASME/IEEE RailRoad CONference |
| RRTC | Role of Religions in the Turkic Culture |
| RSC | River States Conference |
| RTBC | Race Track Business Conference |
| RTC | Revit Technology Conference |
| RTCA | Round Table Coordinating Assembly |
| RTCON | CONference on Real-Time Computer Applications in Nuclear, Particle, and Plasma Physics |
| RTCSA | International Workshop on Real-Time Computing Systems and Applications |
| RTTAS | Real-Time Technology and ApplicationS Conference |
| RTTAS | Real-Time Technology and ApplicationS Conference |
| RTTC | Road to Teaching Conference |
| RWF | Roundtable for Women in Food Service |
| RWS | IEEE Radio and Wireless Symposium |
| SAC | South Atlantic Conference |
| SAC | Student Activities Conference |
| SACHC | San Antonio Catholic Homeschool Conference |
| SACSC | Southern African City Studies Conference |