| WCAS | Former AM-740, Cambridge, Massachusetts; Watertown, Cambridge, Arlington, and Somerville 
| Others |
| WCAS | Northwestern University Weinberg College of Arts & Sciences
| Others |
| WCAS | Wake County Autism Society
| Others |
| WCAS | Waljat Colleges of Applied Sciences
| Others |
| WCAS | Warren County Astronomical Society
| Others |
| WCAS | Washington Crossing Audubon Society
| Others |
| WCAS | We Came As Strangers
| Others |
| WCAS | Weather Climate and Society
| Others |
| WCAS | Weather, Climate, And Society
| Others |
| WCAS | Weinberg College of Arts and Sciences
| Others |
| WCAS | Welsh, Carson, Anderson & Stowe
| Others |
| WCAS | West Coast Analytical Service
| Others |
| WCAS | West Coast Aviation Services
| Others |
| WCAS | Western Cuyahoga Audubon Society
| Others |
| WCAS | Westmorland County Agricultural Society
| Others |
| WCAS | Winnebago County Animal Services
| Others |