RRSS
| Acronym | Definition |
|---|---|
| RRSS | Rear Reflecting Surround System (home theater) |
| RRSS | Regional Residential Services Society (Dartmouth, Nova Scotia, Canada) |
| RRSS | Restricted Residual Sum of Squares (statistics) |
| RRSS | Really Really Simple Syndication |
| RRSS | Reactor Room Spray System |
| RRSS | Radical Radiotherapy with Salvage Surgery (cancer treatment) |