| CARROLL, HARRINGTON, BARBER POST 4908, VETERANS OF FOREIGN WARS OF THE UNITED STATES, INC.East Killingly, CT · Active | East Killingly, CT | Corporation | Sep 4, 1951 | Active |
| QUINEBAUG VALLEY EMERGENCY COMMUNICATIONS, INC.East Killingly, CT · Active | East Killingly, CT | Corporation | Oct 21, 1974 | Active |
| QUINEBAUG VALLEY FIRE CHIEFS ASSOCIATION, INCORPORATED, THEEast Killingly, CT · Forfeited | East Killingly, CT | Corporation | Mar 24, 1952 | Forfeited |
| RESORT CAMP LANDS INTERNATIONAL, INC.E. Killingly, CT · Cancelled | E. Killingly, CT | Corporation | Oct 19, 1993 | Cancelled |
| INTERGRATED SUSTAINABLE ENTERPRISES LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Dec 2, 1997 | Dissolved |
| EAST KILLINGLY VOLUNTEER FIRE DEPARTMENT COMPANYEast Killingly, CT · Active | East Killingly, CT | Corporation | May 14, 1998 | Active |
| POST CONSTRUCTION, LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | Jul 24, 1998 | Forfeited |
| BAILEY HILL MANAGEMENT, LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Sep 8, 1998 | Dissolved |
| CHESTNUT HILL FURNITURE, LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | Mar 16, 2000 | Forfeited |
| D AND L WASTE SERVICE, LLCE. Killingly, CT · Forfeited | E. Killingly, CT | LLC | Mar 20, 2000 | Forfeited |
| WEHMAN INDUSTRIES, LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | Feb 5, 2001 | Forfeited |
| HIDACOV REALTY, LLCEast Killingly, CT · Active | East Killingly, CT | LLC | Jul 18, 2001 | Active |
| HIDEAWAY COVE FAMILY CAMPGROUND, INC.East Killingly, CT · Active | East Killingly, CT | Corporation | Jul 18, 2001 | Active |
| KILLINGLY FENCES, LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | May 1, 2002 | Dissolved |
| J'S FOREIGN AUTO REPAIR, LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Oct 20, 2005 | Dissolved |
| 124 SCHOOL STREET, LLCEast Killingly, CT · Active | East Killingly, CT | LLC | Apr 4, 2006 | Active |
| RENAISSANCE FALLS DEVELOPMENT CORPORATIONEast Killingly, CT · Forfeited | East Killingly, CT | Corporation | May 26, 2006 | Forfeited |
| KIKAPOO PIZZA LLCKillingly, CT · Dissolved | Killingly, CT | LLC | Jun 23, 2006 | Dissolved |
| MONTVILLE HOLDINGS V, LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | Jul 12, 2006 | Forfeited |
| AMT DEVELOPMENT GROUP, LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | Sep 26, 2006 | Forfeited |
| UNITED WE STAND, LLCDayville, CT · Active | Dayville, CT | LLC | Feb 27, 2007 | Active |
| 963 BAILEY HILL ROAD ASSOCIATES, LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | May 16, 2007 | Forfeited |
| NORTHWIN, LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Oct 25, 2007 | Dissolved |
| SURRELL'S FAMILY, LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | Feb 19, 2008 | Forfeited |
| STONE BRIDGE ESTATES, LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Sep 26, 2008 | Dissolved |
| CKRP DEVELOPMENT, LLCDayville, CT · Forfeited | Dayville, CT | LLC | Feb 16, 2010 | Forfeited |
| JILLIAN LANE DISTRIBUTORS INC.East Killingly, CT · Active | East Killingly, CT | Corporation | Apr 25, 2014 | Active |
| HILL TOP WELDING LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | Jun 2, 2014 | Forfeited |
| NEW HOPE ACADEMY INC.East Killingly, CT · Dissolved | East Killingly, CT | Corporation | Aug 14, 2014 | Dissolved |
| HARDCORE HOME IMPROVEMENT LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | Feb 2, 2016 | Forfeited |
| LARRY'S AUTOMOTIVE, LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Feb 5, 2018 | Dissolved |
| CARPENTRY SERVICES CT LLCEast Killingly, CT · Active | East Killingly, CT | LLC | Dec 26, 2018 | Active |
| EAST KILLINGLY AUTOCARE LLCEast Killingly, CT · Active | East Killingly, CT | LLC | Feb 26, 2019 | Active |
| LEWIS BLVD RENTAL PROPERTIES LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Sep 25, 2019 | Dissolved |
| CT MILLS RENTAL PROPERTIES LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Dec 11, 2019 | Dissolved |
| VFW POST 4908 INCEast Killingly, CT · Active | East Killingly, CT | Corporation | Dec 21, 2019 | Active |
| 943 NORTH MAIN STREET RENTAL PROPERTIES LLCEast Killingly, CT · Active | East Killingly, CT | LLC | May 22, 2020 | Active |
| 71 PINEVILLE ROAD RENTAL PROPERTIES LLCEast Killingly, CT · Active | East Killingly, CT | LLC | May 26, 2020 | Active |
| 8 PLEASANT ST RENTAL PROPERTIES LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Jun 4, 2020 | Dissolved |
| 6 PLEASANT ST RENTAL PROPERTIES LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Jun 5, 2020 | Dissolved |
| NORTH FOUNDRY LLCEast Killingly, CT · Forfeited | East Killingly, CT | LLC | Jul 24, 2020 | Forfeited |
| ZEN ZEBRA CONSULTING LLCEast Killingly, CT · Active | East Killingly, CT | LLC | Sep 7, 2020 | Active |
| MECHANIC ST RENTAL PROPERTIES LLCEast Killingly, CT · Active | East Killingly, CT | LLC | Oct 6, 2020 | Active |
| RESORT CAMP LANDS INTERNATIONAL, INC.East Killingly, CT · Active | East Killingly, CT | Corporation | Dec 14, 2020 | Active |
| NORWICH DISCOUNT REMODELERS LLCEast Killingly, CT · Dissolved | East Killingly, CT | LLC | Apr 19, 2021 | Dissolved |
| Harmony Gardens CT, LLCEast Killingly, CT · Active | East Killingly, CT | LLC | Aug 5, 2024 | Active |
| The Proper Finnish LLCEast Killingly, CT · Active | East Killingly, CT | LLC | Aug 13, 2024 | Active |
| ECC Outdoors, LLCEast Killingly, CT · Active | East Killingly, CT | LLC | Jan 7, 2025 | Active |
| CONSERVATIVE CAPITAL CORP.Location not reported, FL · Inactive | Location not reported, FL | Corporation | Jul 21, 1988 | Inactive |