| HADLYME PUBLIC HALL ASSOCIATION INCORPORATED, THEHadlyme, CT · Active | Hadlyme, CT | Corporation | Oct 3, 1911 | Active |
| H. P. BROOM, HOUSEWRIGHT, INC.Hadlyme, CT · Active | Hadlyme, CT | Corporation | Sep 29, 1980 | Active |
| ROB'S AUTO SERVICE, INC.Hadlyme, CT · Active | Hadlyme, CT | Corporation | Feb 11, 1985 | Active |
| PHILLIPS & BONVINI ASSOCIATES, INC.Hadlyme, CT · Forfeited | Hadlyme, CT | Corporation | Feb 24, 1988 | Forfeited |
| E-SQUARED ENTERPRISES, INC.Guilford, CT · Dissolved | Guilford, CT | Corporation | Oct 10, 1996 | Dissolved |
| GOODSPEED REALTY, L.L.C.Hadlyme, CT · Forfeited | Hadlyme, CT | LLC | Dec 3, 1996 | Forfeited |
| WORLD HERBS GOURMET COMPANY LLCHadlyme, CT · Forfeited | Hadlyme, CT | LLC | Feb 26, 1997 | Forfeited |
| COUNTRYSIDE REALTY OF CONNECTICUT, INC.Hadlyme, CT · Dissolved | Hadlyme, CT | Corporation | May 1, 1997 | Dissolved |
| HADLYME STATION, L.L.C.Hadlyme, CT · Active | Hadlyme, CT | LLC | Sep 22, 1997 | Active |
| CAPE SEVILLITY, LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Feb 7, 2000 | Active |
| HADLYME COUNTRY STORE, L.L.C.Hadlyme, CT · Dissolved | Hadlyme, CT | LLC | May 11, 2000 | Dissolved |
| M&M PROPERTIES, PLAINS ROAD II, LLCHadlyme, CT · Dissolved | Hadlyme, CT | LLC | Jul 10, 2001 | Dissolved |
| M&M PROPERTIES, PLAINS ROAD I, LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Jul 23, 2001 | Active |
| M & D PROPERTIES, LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Mar 26, 2002 | Active |
| ENERGY SOLUTIONS INTERNATIONAL, LLCGuilford, CT · Forfeited | Guilford, CT | LLC | Jul 30, 2002 | Forfeited |
| HILL SERVICES, LLCHadlyme, CT · Forfeited | Hadlyme, CT | LLC | Dec 3, 2002 | Forfeited |
| BLOCK DESIGN | BUILD LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Sep 22, 2003 | Active |
| BLACKFISH PARTNERS LLCFairfield, CT · Forfeited | Fairfield, CT | LLC | Mar 17, 2004 | Forfeited |
| CONNECTICUT DRY STONE WALLING, LLCHadlyme, CT · Forfeited | Hadlyme, CT | LLC | Oct 13, 2004 | Forfeited |
| MF VENTURE I, LLCFairfield, CT · Dissolved | Fairfield, CT | LLC | Nov 3, 2004 | Dissolved |
| ROY LESCOE PROPERTIES, LLCHadlyme, CT · Dissolved | Hadlyme, CT | LLC | Dec 7, 2004 | Dissolved |
| SKLAR, LLCHadlyme, CT · Dissolved | Hadlyme, CT | LLC | Aug 25, 2006 | Dissolved |
| NEW ENGLAND POST & BEAM, LLCHadlyme, CT · Forfeited | Hadlyme, CT | LLC | Feb 13, 2009 | Forfeited |
| SVEC REMODELING LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Jun 12, 2009 | Active |
| GEOLOGICAL SOCIETY OF CONNECTICUT, INC.Hadlyme, CT · Active | Hadlyme, CT | Corporation | Oct 27, 2010 | Active |
| ACACIA BOOK COMPANYHadlyme, CT · Dissolved | Hadlyme, CT | Corporation | Dec 15, 2010 | Dissolved |
| ROBIN'S ROCKIN ROADHOUSE, LLCHadlyme, CT · Forfeited | Hadlyme, CT | LLC | Mar 18, 2011 | Forfeited |
| HADLYME COUNTRY MARKET AND STORE, LLCHadlyme, CT · Dissolved | Hadlyme, CT | LLC | Nov 1, 2012 | Dissolved |
| 45 HARBOR VIEW, LLCHadlyme, CT · Dissolved | Hadlyme, CT | LLC | Feb 15, 2013 | Dissolved |
| FORTE FAMILY BROADCASTING, INC.Hadlyme, CT · Active | Hadlyme, CT | Corporation | Oct 11, 2013 | Active |
| ERIN NICOLE PHOTOGRAPHY LLCHadlyme, CT · Forfeited | Hadlyme, CT | LLC | Nov 21, 2014 | Forfeited |
| JEFF STANDISH FINE CARPENTRY & MILLSHOP, LLCHadlyme, CT · Forfeited | Hadlyme, CT | LLC | Nov 25, 2015 | Forfeited |
| TANGO2 RESEARCH FOUNDATION INCORPORATEDHadlyme, CT · Active | Hadlyme, CT | Corporation | Dec 11, 2017 | Active |
| SY MARINE LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Apr 23, 2019 | Active |
| INNOVATIVE DOORWAYS, LLCHadlyme, CT · Forfeited | Hadlyme, CT | LLC | May 3, 2019 | Forfeited |
| MRSPEEJ LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Aug 21, 2020 | Active |
| MEREDITH DUXBURY LLCHadlyme, CT · Dissolved | Hadlyme, CT | LLC | Dec 22, 2020 | Dissolved |
| MARY MAGUIRE LLCHadlyme, CT · Active | Hadlyme, CT | LLC | May 7, 2021 | Active |
| Andrew Fredman Architect LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Jul 6, 2021 | Active |
| M & M Properties CRS, LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Dec 17, 2021 | Active |
| Foster & Barrows Design LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Jun 27, 2022 | Active |
| Three Bridges Venture Group LLCHadlyme, CT · Active | Hadlyme, CT | LLC | May 16, 2023 | Active |
| M&M Properties, Town Street I, LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Jan 26, 2024 | Active |
| Mazu Adventures Limited Liability CompanyHadlyme, CT · Dissolved | Hadlyme, CT | LLC | Jul 9, 2024 | Dissolved |
| LKH LLCHadlyme, CT · Active | Hadlyme, CT | LLC | Sep 30, 2025 | Active |