GLCA
| Acronym | Definition |
|---|---|
| GLCA | Glen Canyon National Recreation Area (US National Park Service) |
| GLCA | Great Lakes College Association |
| GLCA | Great Lakes Construction Alliance |
| GLCA | Great Lakes Curling Association (Cleveland Heights, Ohio) |
| GLCA | Great Lakes Captains Association (Sault Sainte Marie, MI) |
| GLCA | Great Lakes Charter Annex (water resource agreement) |