| WCAA | FM-105.9, New York City, New York 
| Others |
| WCAA | Wake County Athletic Association
| Others |
| WCAA | Walsh College Alumni Association
| Others |
| WCAA | Washington County Administrative Association
| Others |
| WCAA | Wayne County Airport Authority
| Others |
| WCAA | Wayne County Art Alliance
| Others |
| WCAA | Wellesley College Alumnae Association
| Others |
| WCAA | Wesley Chapel Athletic Association
| Others |
| WCAA | West Coast Action Alliance
| Others |
| WCAA | West Coast Avengers Annual
| Others |
| WCAA | Western Carolina Athletic Association
| Others |
| WCAA | Western Classified Advertising Association
| Others |
| WCAA | Western College Alumnae Association
| Others |
| WCAA | Western Collegiate Athletic Association
| Others |
| WCAA | Window Coverings Association of America
| Others |
| WCAA | Windy City Athletic Association
| Others |
| WCAA | Workers' Compensation Reinsurance Association
| Others |
| WCAA | World Council of Anthropological Associations
| Others |