| Rank | Abbreviation | Meaning |
|---|
| ***** | WSA | War Shipping Administration (World War Ii)
| |
| **** | WSA | Water Services Authority (South Africa)
| |
| **** | WSA | Weapons Systems Analysis
| |
| **** | WSA | Weapons Storage Area
| |
| **** | WSA | Work Statement and Authorization
| |
| *** | WSA | Wilderness Study Area
| |
| ** | WSA | Weapon/Warfare Systems Acquisition/Architect
| |
| ** | WSA | Warfare Systems Architecture
| |
| * | WSA | Warfare Systems Architect
| |
| * | WSA | Web Security Administrator
| |
| * | WSA | Weapon Storage Area
| |
| * | WSA | Workplace Standards Authority (Australia)
| |
| * | WSA | Wing Staff Agency (US DoD)
| |
| * | WSA | Wilderness Preservation System
| |
| * | WSA | Winter Storm Alert
| |
| * | WSA | Water Supply Act
| |