| Acronym | Definition |
|---|
| RCSG➣Risk Communication Specialty Group (Society for Risk Analysis) |
| RCSG➣Rochester Celiac Support Group (disease support; Rochester, NY) |
| RCSG➣Rift Control Study Group (role-playing game) |
| RCSG➣Red Cedar Solutions Group (Okemos, MI) |
| RCSG➣Red Cross Society of Guinea |
| RCSG➣Research Computing Services Group (Information Management Services Branch, National Research Council, Canada |