LECA
| Acronym | Definition |
|---|---|
| LECA | Light Expanded Clay Aggregate (brand name) |
| LECA | Lightweight Expanded Clay Aggregate (hydroponic growing medium) |
| LECA | Laboratoire d'Examen des Combustibles Actifs (French: Fuel Assets Examination Laboratory) |
| LECA | Law Enforcement Clerks Association |
| LECA | Law Enforcement Communications Assistant (US Border Patrol) |
| LECA | Launch Escape Control Area |
| LECA | Largest Effective Coefficient Algorithm |
| LECA | Lehman Caves National Monument |