| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| WICKLANDER ZULAWSKI AND ASSOCS | Business | 118000100 | AURORA | CLOSED | Verify |
| WIEBOLDT STORES INC | Business | 120000031 | CHICAGO | CANCELLED | Verify |
| WILL COUNTY LOCKSMITH SERVICES | Business | 192000232 | ROCKDALE | NOT RENEWED | Verify |
| WILL COUNTY REGIONAL OFFICE OF EDUCATION | Business | 262000080 | NEW LENOX | NOT RENEWED | Verify |
| WILLETT DETECTIVE AGCY | Business | 122000463 | CHICAGO | INOPERATIVE | Verify |
| WILLETT DETECTIVE AGENCY INC | Business | 122001009 | CHICAGO | NOT RENEWED | Verify |
| WILLIAM G BRUDENELL INC | Business | 117001219 | WAUKEGAN | NOT RENEWED | Verify |
| WILLIAM J WHITNEY INVESTIGATIONS | Business | 117000286 | BELLEVILLE | NOT RENEWED | Verify |
| WILLIAM K MONSEN & ASSOCIATES | Business | 117001265 | BUFFALO GROVE | NOT RENEWED | Verify |
| WILLIAM L LLOYD AND ASSOCS | Business | 117000514 | HILLSIDE | INOPERATIVE | Verify |
| WILLIAM M BONNAMY AND ASSOCIATES | Business | 122000064 | NAPERVILLE | NOT RENEWED | Verify |
| WILLIAM M BONNAMY AND ASSOCIATES | Business | 117000074 | NAPERVILLE | NOT RENEWED | Verify |
| WILLIAM MASTERS INC | Business | 127000287 | BLOOMINGTON | NOT RENEWED | Verify |
| WILLIAM SHEEHAN & ASSOCIATES INC | Business | 117001500 | LANSING | CLOSED | Verify |
| WILLIAM T WAGNER | Business | 117000778 | CHICAGO | NOT RENEWED | Verify |
| WILLIS ALARMS INC | Business | 128000124 | CHICAGO | NOT RENEWED | Verify |
| WILLIS ALARMS INC | Business | 127000976 | SOUTH BELOIT | NOT RENEWED | Verify |
| WILLIS DETECTIVE AGENCY LLC | Business | 117001668 | EFFINGHAM | NOT RENEWED | Verify |
| WILSON ELECTRIC | Business | 127000240 | CARBONDALE | NOT RENEWED | Verify |
| WILSON ELECTRIC CO | Business | 127000651 | ROCKFORD | NOT RENEWED | Verify |
| WINDHAM SECURITY SERVICE | Business | 201000125 | BLOOMINGDALE | ACTIVE | Verify |
| WINDSOR DEFENSE PLLC | Business | 127001895 | CHICAGO | ACTIVE | Verify |
| WINDSOR DEFENSE PLLC | Business | 122001616 | CHICAGO | INOPERATIVE | Verify |
| WINDY CITY ALARM CO INC | Business | 127000520 | OAK LAWN | NOT RENEWED | Verify |
| WINDY CITY LOCKSMITHS INC | Business | 192000288 | GRAYSLAKE | NOT RENEWED | Verify |
| WINDY CITY PEACEKEEPERS SECURITY LLC | Business | 122001172 | CHICAGO | NOT RENEWED | Verify |
| WINDY CITY PROCESS SERVING INC | Business | 117001816 | CHICAGO | ACTIVE | Verify |
| WINDY CITY SECURITY | Business | 123000311 | CHICAGO | NOT RENEWED | Verify |
| WINDY CITY SECURITY | Business | 118000244 | CHICAGO | NOT RENEWED | Verify |
| WINDY CITY SECURITY & INVESTIGATIONS INC | Business | 117001359 | CHICAGO | INOPERATIVE | Verify |
| WINDY CITY SECURITY & INVESTIGATIONS INC | Business | 122001039 | CHICAGO | ACTIVE | Verify |
| WINDY CITY SECURITY AND INVESTIGATIONS INC | Business | 102000395 | CHICAGO | ACTIVE | Verify |
| WINDY CITY SECURITY INC | Business | 122000744 | CHICAGO | NOT RENEWED | Verify |
| WINDY CITY SECURITY SYSTEMS INC | Business | 127000736 | CHICAGO | NOT RENEWED | Verify |
| WINDY CITY SURVEILLANCE CORP | Business | 127001457 | BRIDGEVIEW | ACTIVE | Verify |
| WINSTONS PROTECTIVE SERVICE | Business | 201000065 | CHICAGO | ACTIVE | Verify |
| WINTERS INVESTIGATIONS | Business | 117001657 | CHICAGO | NOT RENEWED | Verify |
| WIRE WIZARD | Business | 127000480 | YORKVILLE | NOT RENEWED | Verify |
| WIRE WIZARD OF ILLINOIS INC | Business | 127000948 | PLANO | ACTIVE | Verify |
| WISDOM AND ASSOCIATES INC | Business | 117001041 | INDIAN HEAD PARK | NOT RENEWED | Verify |
| WISE START INC | Business | 117001443 | MCHENRY | NOT RENEWED | Verify |
| WISEMAN DETECTIVE AGENCY | Business | 117000042 | MARION | NOT RENEWED | Verify |
| WISEMAN DETECTIVE AGENCY | Business | 122000036 | MARION | NOT RENEWED | Verify |
| WLPI LTD | Business | 117001327 | BRIMFIELD | CLOSED | Verify |
| WM MASTERS INC | Business | 127001624 | BLOOMINGTON | NOT RENEWED | Verify |
| WOELFEL & ASSOCIATES INC | Business | 117000827 | COLLINSVILLE | NOT RENEWED | Verify |
| WOODALL AND WOODALL | Business | 117000111 | SIGEL | NOT RENEWED | Verify |
| WOODALL AND WOODALL | Business | 122000095 | SIGEL | NOT RENEWED | Verify |
| WOODBRIDGE SECURITY PLLC | Business | 122001599 | OAK BROOK | ACTIVE | Verify |
| WOODFIELD HOTEL LIMITED PARTNERSHIP DBA | Business | 120100035 | ARLINGTON HEIGHTS | CANCELLED | Verify |