| WMCA | Washington Metropolitan Courier Association 
| Others |
| WMCA | Washington Municipal Clerks Association
| Others |
| WMCA | West Michigan Construction Alliance
| Others |
| WMCA | West Michigan Counseling Association
| Others |
| WMCA | West Midlands Combined Authority
| Others |
| WMCA | Western Maine Community Action
| Others |
| WMCA | Western Mass Coaching Alliance
| Others |
| WMCA | Western Massachusetts Chess Association
| Others |
| WMCA | Western Medical Center Anaheim
| Others |
| WMCA | William & Mary Chancellor Academy
| Others |
| WMCA | Wisconsin Medical Credit Association
| Others |
| WMCA | Wisconsin Motor Carriers Association
| Others |
| WMCA | Wisconsin Motor Coach Association
| Others |
| WMCA | Wisconsin Municipal Clerks Association
| Others |
| WMCA | World Malayali Christians Association
| Others |
| WMCA | World Mosquito Control Association
| Others |