| Acronym | Definition |
|---|
| RCSL➣Rugby Canada Super League |
| RCSL➣RealNetworks Community Source License |
| RCSL➣RPG Cellular Services Ltd. (India) |
| RCSL➣Research Committee Sociology of Law |
| RCSL➣Robayne Computing Services Ltd. (est. 1993; UK) |
| RCSL➣Regional Counter-Strike League (computer game league; Russia) |