| 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) |