| Acronym | Definition |
|---|
| LGSA | Local Government and Shires Association |
| LGSA | Local Government Supervisors Association (Australia) |
| LGSA | Langer-Giedion Syndrome Association |
| LGSA | Landgesellschaft Sachsen Anhalt |
| LGSA | Lake Geneva Summer Assembly |
| LGSA | Lancaster Girls Softball Association (Ohio) |
| LGSA | Leeds and Grenville Snowmobiling Association (Canada) |
| LGSA | Lubbock Gay Straight Alliance (Texas) |
| LGSA | Linguistics Graduate Student Association |
| LGSA | Lesbian Gay Straight Alliance |
| LGSA | Lake George Scholarship Association |
| LGSA | Lawrence Gay Straight Alliance |