| Acronym | Definition |
|---|
| OLSC | Official Liverpool Supporters Club (fan club; Liverpool, England, UK) |
| OLSC | Ottawa Life Sciences Council (Ottawa, Ontario, Canada) |
| OLSC | Office of Legal Services Coordination (Australia) |
| OLSC | Office of the Legal Services Commissioner (Sydney, New South Wales, Australia) |
| OLSC | Oceanside Longboard Surfing Club (California) |
| OLSC | Official Leinster Supporters Club (est. 2007; Ireland; rugby fan club) |
| OLSC | Ontario Library Services Centre (Kitchener, Canada) |
| OLSC | Override, Limit & Status Check |
| OLSC | On-Line Services Committee (Iowa Counties Information Technology Organization) |