CLSG
| 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) |