| Entity Name | Type | License # | City | Status | Action |
|---|---|---|---|---|---|
| KNIGHT SECURITY INC | Business | 122000914 | WARRENVILLE | NOT RENEWED | Verify |
| KNIGHT SECURITY SYSTEM | Business | 127000578 | ARLINGTON HEIGHTS | NOT RENEWED | Verify |
| KNIGHTWATCH SECURITY | Business | 117000229 | CHICAGO | CANCELLED | Verify |
| KNIGHTWATCH SECURITY | Business | 127000048 | CHICAGO | CANCELLED | Verify |
| KNIGHTWATCH SECURITY | Business | 122000147 | CHICAGO | CANCELLED | Verify |
| KNV FIRE & SECURITY INC | Business | 127001468 | CRYSTAL LAKE | ACTIVE | Verify |
| KOCOA ENTERPRISES CORPORATION | Business | 122001684 | CHICAGO | ACTIVE | Verify |
| KOEHLER ELECTRIC COMPANY INC | Business | 127000134 | BENSENVILLE | NOT RENEWED | Verify |
| KOENER ELECTRIC INC | Business | 127001395 | PEORIA | ACTIVE | Verify |
| KOENITZ & ASSOCIATES INC | Business | 117001557 | NAPERVILLE | ACTIVE | Verify |
| KOENITZ & ASSOCIATES INVESTIGATONS INC | Business | 117000859 | NAPERVILLE | NOT RENEWED | Verify |
| KOHN DETECTIVE AGCY | Business | 201000080 | CHICAGO | CLOSED | Verify |
| KOIN AND STRONG INC | Business | 117000221 | CHICAGO | NOT RENEWED | Verify |
| KOIN AND STRONG INC | Business | 127000184 | CHICAGO | NOT RENEWED | Verify |
| KOMAR ASSOCIATES INC | Business | 127001420 | JOLIET | ACTIVE | Verify |
| KOURT SECURITY PARTNERS LLC | Business | 127001726 | SPRINGFIELD | NOT RENEWED | Verify |
| KRATOS PUBLIC SAFETY & SECURITY SOLUTIONS INC | Business | 127001550 | CAROL STREAM | NOT RENEWED | Verify |
| KRIMSON SECURITY | Business | 262000115 | WESTMONT | ACTIVE | Verify |
| KRIMSON SECURITY & FINGERPRINTING INC | Business | 102000426 | WESTMONT | ACTIVE | Verify |
| KRIMSON SECURITY & FINGERPRINTING INC | Business | 122001474 | WESTMONT | ACTIVE | Verify |
| KRIMSON SECURITY & FINGERPRINTING INC | Business | 117001819 | WESTMONT | ACTIVE | Verify |
| KRIZAN ENTERPRISES INC | Business | 122000687 | BRADLEY | NOT RENEWED | Verify |
| KROLL ASSOCIATES INC | Business | 117000861 | CHICAGO | ACTIVE | Verify |
| KROPEK INC | Business | 122001427 | ELMHURST | ACTIVE | Verify |
| KRUZ INVESTIGATIONS INC | Business | 117001548 | WILMINGTON | NOT RENEWED | Verify |
| KS MERCHANDISE MART | Business | 120000059 | SPRINGFIELD | NOT RENEWED | Verify |
| KS MERCHANDISE MART | Business | 201000221 | SPRINGFIELD | ACTIVE | Verify |
| L & L PACKING CO | Business | 120100096 | CHICAGO | NOT RENEWED | Verify |
| L & R SECURITY CORPORATION | Business | 102000069 | GRANITE CITY | ACTIVE | Verify |
| L AND H INVESTIGATIONS | Business | 117000576 | SPRING GROVE | INOPERATIVE | Verify |
| L AND R SECURITY CORPORATION | Business | 122000290 | GRANITE CITY | INOPERATIVE | Verify |
| L AND R SECURITY CORPORATION | Business | 117000318 | GRANITE CITY | INOPERATIVE | Verify |
| L AND R SECURITY CORPORATION | Business | 127000349 | GRANITE CITY | INOPERATIVE | Verify |
| L BIELA & ASSOCIATES DETECTIVES LTD | Business | 117001323 | CHICAGO | NOT RENEWED | Verify |
| L D SHELDON INC | Business | 117000686 | LEBANON | INOPERATIVE | Verify |
| L E M TRAINING ACADEMY INC | Business | 262000094 | OAK LAWN | NOT RENEWED | Verify |
| L F RAICHE CO INC | Business | 192000185 | KANKAKEE | NOT RENEWED | Verify |
| L L WARSHAUER ASSOC | Business | 127000409 | NORTHBROOK | ACTIVE | Verify |
| L R LEWISON INTL SEC | Business | 117000034 | CHICAGO | NOT RENEWED | Verify |
| L R LEWISON INTL SEC | Business | 122000030 | CHICAGO | NOT RENEWED | Verify |
| L R LEWISON INTL SECURITY SERVS & INVEST | Business | 127000003 | CHICAGO | NOT RENEWED | Verify |
| L U X SECURITY SYSTEMS | Business | 127000425 | CHICAGO | ACTIVE | Verify |
| L V S INC | Business | 127001142 | CHICAGO | NOT RENEWED | Verify |
| L W JOHNSON ELECTRICCOMPANY | Business | 127000718 | CHICAGO | NOT RENEWED | Verify |
| LA GRANGE LOCK & SAFE INC | Business | 192000155 | COUNTRYSIDE | NOT RENEWED | Verify |
| LA THOMAS SECURITY CORPORATION | Business | 117001670 | BOLINGBROOK | ACTIVE | Verify |
| LA THOMAS SECURITY CORPORATION | Business | 122001265 | BOLINGBROOK | ACTIVE | Verify |
| LA THOMAS SECURITY CORPORATION | Business | 262000081 | BOLINGBROOK | ACTIVE | Verify |
| LACROSSE ELECTRIC CO | Business | 127000170 | BENSENVILLE | ACTIVE | Verify |
| LAFORCE LLC | Business | 127001554 | VERNON HILLS | ACTIVE | Verify |