GLCS
| Acronym | Definition |
|---|---|
| GLCS | Gay and Lesbian Community Services (various locations) |
| GLCS | Gay and Lesbian Counselling Service (Newtown, New South Wales, Australia) |
| GLCS | Global Lottery Collector's Society |
| GLCS | Goldleader's Commandos |
| GLCS | Gospel Light Christian School (North Carolina) |
| GLCS | Global Logistics Control System (Qiva) |
| GLCS | Great Lakes Cinephile Society (Michigan) |