| Acronym | Definition |
|---|
| MWSA➣Motorway Service Area (UK) |
| MWSA➣Michigan Water Ski Association |
| MWSA➣Manly Warringah Softball Association (Australia) |
| MWSA➣Ministry of Work and Social Affairs (Czech Republic) |
| MWSA➣Massachusetts Woman Suffrage Association (now Massachusetts League of Women Voters) |
| MWSA➣Ministry of Women and Social Action (Mozambique) |
| MWSA➣Minnesota Woman Suffrage Association (1881-1913) |