| Acronym | Definition |
|---|
| GLPA➣Great Lakes Pilotage Authority (Canada) |
| GLPA➣Great Lakes Planetarium Association |
| GLPA➣Gigalitres per Annum (measurement) |
| GLPA➣Greenwood-Lander Performing Arts (South Carolina) |
| GLPA➣Georgia Legal Professionals for Animals (est. 2002) |
| GLPA➣Greater Lynn Photographic Association (Lynn, MA) |
| GLPA➣Gun Lake Protective Association |