RSSL
| Acronym | Definition |
|---|---|
| RSSL | Reading Scientific Services Ltd (UK) |
| RSSL | Retirement and Social Security Law (New York) |
| RSSL | Reading Scientific Services Limited (commercial laboratory; UK) |
| RSSL | Radio Society of Sri Lanka |
| RSSL | Richmond Senior Soccer League (est. 1960; British Columbia, Canada) |
| RSSL | Reliance Security Services Ltd. (UK) |