| Acronym | Meaning |
| LAB | Land Air Battle |
| LAB | Landscape Architect Board (various locations) |
| LAB | Leave Authorization Balance |
| LAB | Legislative Approved Budget (Oregon) |
| LAB | Legislatively Adopted Budget (Oregon) |
| LAB | Light Armor Battalion |
| LAB | Light Assault Bridge |
| LAB | Local Administration Bureau (various locations) |
| LAB | Logistics Assault Base |
| LAB | Low Altitude Bombardment |
| LAB | Low-Angle Bombing |