| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| LOUGHLIN AND SONS INC | Business | 127000459 | TINLEY PARK | INOPERATIVE | Verify |
| LOW VOLTAGE INC | Business | 127001403 | OAK BROOK | ACTIVE | Verify |
| LOW VOLTAGE INSTALLATION SERVICE INC | Business | 127001408 | PLAINFIELD | ACTIVE | Verify |
| LOW VOLTAGE SOLUTIONS, INC. | Business | 127001811 | LOCKPORT | NOT RENEWED | Verify |
| LOW VOLTAGE SYSTEMS INC | Business | 127001303 | NEW LENOX | ACTIVE | Verify |
| LOW VOLTAGE WORKS INC | Business | 127001258 | ELMHURST | ACTIVE | Verify |
| LOWE'S HOME CENTERS LLC | Business | 127001693 | SPRINGFIELD | NOT RENEWED | Verify |
| LOWELL ENTERPRISES | Business | 117000008 | BOLINGBROOK | NOT RENEWED | Verify |
| LOWRY ELECTRIC COMPANY | Business | 127000316 | EAST ST LOUIS | NOT RENEWED | Verify |
| LOWVOLTAGE SECURITY INC | Business | 127001486 | CREST HILL | NOT RENEWED | Verify |
| LPDN INC | Business | 122000808 | CALUMET CITY | NOT RENEWED | Verify |
| LPDN INC | Business | 117000093 | WILLOWBROOK | NOT RENEWED | Verify |
| LRG SECURITY SERVICES INC | Business | 122001455 | TINLEY PARK | NOT RENEWED | Verify |
| LSA LOCKHART SECURITY AGENCY | Business | 122001148 | CHICAGO | ACTIVE | Verify |
| LTD COMMODITIES LLC | Business | 120500150 | BANNOCKBURN | NOT RENEWED | Verify |
| LUBAVITCH MESIVTA OF CHICAGO | Business | 120500166 | CHICAGO | ACTIVE | Verify |
| LUCAS INVESTIGATIONS INC | Business | 117001096 | CHICAGO | INOPERATIVE | Verify |
| LUCAS PLATE AND ASSOCIATES | Business | 117000080 | PEORIA | NOT RENEWED | Verify |
| LUCKY LINCOLN GAMING, LLC | Business | 120500156 | CHICAGO | ACTIVE | Verify |
| LUCKY LOCK & SAFE INC | Business | 192000228 | ROSCOE | NOT RENEWED | Verify |
| LUNA SECURITY SERVICES INC | Business | 122000662 | CHICAGO | ACTIVE | Verify |
| LUSTER PRODUCTS SECURITY FORCE | Business | 120100058 | CHICAGO | NOT RENEWED | Verify |
| LV TECH INC | Business | 127001091 | MARENGO | ACTIVE | Verify |
| LWM RESEARCH INC | Business | 117000939 | EAST ALTON | ACTIVE | Verify |
| LYGHT DETECTIVE AGENCY | Business | 118000147 | ELGIN | NOT RENEWED | Verify |
| LYGHT DETECTIVE AGENCY | Business | 117001817 | ELGIN | NOT RENEWED | Verify |
| LYGHT DETECTIVE AGENCY | Business | 117000306 | ELGIN | NOT RENEWED | Verify |
| LYGHT DETECTIVE AGENCY | Business | 118000139 | ST CHARLES | NOT RENEWED | Verify |
| LYGHT DETECTIVE AGENCY | Business | 118000142 | CRYSTAL LAKE | NOT RENEWED | Verify |
| LYNART SERVICES | Business | 127000084 | DOLTON | NOT RENEWED | Verify |
| LYNCH SPECIAL SERVICES INC | Business | 122000497 | WONDER LAKE | INOPERATIVE | Verify |
| LYONS GLOBAL INVESTIGATIONS LLC | Business | 117001822 | PALOS HEIGHTS | ACTIVE | Verify |
| M & H WIRING CONTRACTORS INC | Business | 127000972 | NAPERVILLE | NOT RENEWED | Verify |
| M & J ALARMS | Business | 127000159 | CHICAGO | CANCELLED | Verify |
| M & M CONSULTANTS OF CHICAGO LIMITED | Business | 122000885 | CHICAGO | NOT RENEWED | Verify |
| M & M ENTERPRISES | Business | 102000123 | MARKHAM | ACTIVE | Verify |
| M & M SECURITY SERVICE INC | Business | 127000088 | EVANSTON | NOT RENEWED | Verify |
| M & R ELECTRONIC SYSTEMS INC | Business | 127000971 | LINCOLNSHIRE | ACTIVE | Verify |
| M & S SECURITY SYSTEMS INC | Business | 127001107 | WESTMONT | ACTIVE | Verify |
| M & T ASSOCIATES DELTA | Business | 117000676 | SPRINGFIELD | INOPERATIVE | Verify |
| M AND M CONSULTANTS LIMITED | Business | 117000720 | PARK RIDGE | NOT RENEWED | Verify |
| M AND M LOCK AND SAFE SERVICE LTD | Business | 127000308 | ITASCA | NOT RENEWED | Verify |
| M AND R ELECTRONIC SYSTEMS INC | Business | 127000384 | ARLINGTON HEIGHTS | NOT RENEWED | Verify |
| M B FINANCIAL BANK | Business | 120500113 | CHICAGO | NOT RENEWED | Verify |
| M B NIXON ELECTRIC CO INC | Business | 127000676 | NILES | NOT RENEWED | Verify |
| M D S SYSTEMS | Business | 102000385 | MONEE | ACTIVE | Verify |
| M J ALARM SERVICES LLC | Business | 127001284 | ELGIN | INOPERATIVE | Verify |
| M J ELECTRIC LLC | Business | 127001770 | ORLAND PARK | NOT RENEWED | Verify |
| M J LANE | Business | 117000622 | NORTHLAKE | CANCELLED | Verify |
| M J LANE CORPORATION | Business | 117000699 | NORTH RIVERSIDE | NOT RENEWED | Verify |