| Acronym | Definition |
|---|
| CLSG➣City of London School for Girls |
| CLSG➣Christian Literary Studies Group |
| CLSG➣Canadian Leukemia Studies Group (Ottawa Hospital) |
| CLSG➣Cuban Libraries Solidarity Group |
| CLSG➣Cuban Library Support Group (est. 1999) |
| CLSG➣Commercial Laminating Solutions Group (Acco Brands) |