| B. F. HOXIE ENGINE COMPANY, NO. 1, INC.Mystic, CT · Active | Mystic, CT | Corporation | Sep 20, 1962 | Active |
| WHITEHALL HOME OWNER'S ASSOCIATION, INC.Mystic, CT · Active | Mystic, CT | Corporation | Jun 23, 1977 | Active |
| ASSOCIATION FOR THE STUDY OF CONNECTICUT HISTORY, INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | Jan 7, 1970 | Forfeited |
| CONNECTICUT BEER WHOLESALERS ASSOCIATION, INCORPORATEDMystic, CT · Active | Mystic, CT | Corporation | Sep 20, 1939 | Active |
| CHAPTER 334, EXPERIMENTAL AIRCRAFT ASSOCIATION, INCMystic, CT · Forfeited | Mystic, CT | Corporation | Dec 18, 1969 | Forfeited |
| CONNECTICUT ACADEMY OF FINE ARTS INCORPORATED, THEMystic, CT · Active | Mystic, CT | Corporation | May 21, 1927 | Active |
| DENISON PEQUOTSEPOS NATURE CENTER, INC.Mystic, CT · Active | Mystic, CT | Corporation | Feb 15, 1972 | Active |
| GERMAN SOCAIL SOCIETY FROHSINN INCORPORATEDMystic, CT · Active | Mystic, CT | Corporation | Mar 12, 1906 | Active |
| HUGO A. SIMONELLI POST NO. 3263 VETERANS OF FOREIGN WARS OF THE UNITED STATES, INCORPORATEDMystic, CT · Active | Mystic, CT | Corporation | Nov 28, 1949 | Active |
| INDIAN AND COLONIAL RESEARCH CENTER, INC., THEMystic, CT · Active | Mystic, CT | Corporation | Dec 16, 1965 | Active |
| INSTITUTE OF CONTINUING EDUCATION, INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | Dec 15, 1975 | Forfeited |
| MASON'S ISLAND YACHT CLUB INCORPORATED, THEMystic, CT · Active | Mystic, CT | Corporation | Apr 26, 1928 | Active |
| GREATER MYSTIC CHAMBER OF COMMERCE, INC.Mystic, CT · Active | Mystic, CT | Corporation | Oct 4, 1939 | Active |
| YOUNG MEN'S CHRISTIAN ASSOCIATION OF MYSTIC CONNECTICUT, INCORPORATEDMystic, CT · Merged | Mystic, CT | Corporation | Oct 2, 1946 | Merged |
| MYSTIC HOOK AND LADDER COMPANY, INCORPORATEDMystic, CT · Active | Mystic, CT | Corporation | Jul 28, 1967 | Active |
| MYSTIC RIVER HISTORICAL SOCIETY, INC. THEMystic, CT · Active | Mystic, CT | Corporation | Jul 27, 1973 | Active |
| MYSTIC ROD AND GUN CLUB, INCORPORATED, THEMystic, CT · Active | Mystic, CT | Corporation | May 7, 1940 | Active |
| MYSTIC YACHT CLUB, INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | May 23, 1962 | Forfeited |
| OLDE MISTICK VILLAGE MERCHANTS' ASSOCIATION, INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | Feb 19, 1974 | Forfeited |
| ORCHARD HILL BEACH DRIVE ASSOCIATION INCORPORATEDMystic, CT · Active | Mystic, CT | Corporation | Sep 19, 1962 | Active |
| RIVERSEDGE ASSOCIATION, INC.Mystic, CT · Active | Mystic, CT | Corporation | May 14, 1971 | Active |
| RELIANCE FIRE DEPARTMENT, INCORPORATED THEMystic, CT · Active | Mystic, CT | Corporation | Sep 4, 1946 | Active |
| THE DENISON SOCIETY, INCORPORATEDMystic, CT · Active | Mystic, CT | Corporation | Jan 21, 1930 | Active |
| MYSTIC BABE RUTH LEAGUE INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | Mar 16, 1965 | Forfeited |
| TOM KING ASSOCIATES, INC.Mystic, CT · Dissolved | Mystic, CT | Corporation | Dec 9, 1977 | Dissolved |
| A & D ELECTRIC, INC.Mystic, CT · Dissolved | Mystic, CT | Corporation | Oct 11, 1977 | Dissolved |
| ALL SEASONS TRAVEL OF CONNECTICUT, INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | Feb 10, 1971 | Forfeited |
| MYSTIC DENTAL GROUP, P.C.Mystic, CT · Active | Mystic, CT | Corporation | Jul 5, 1978 | Active |
| MYSTIC MARINE FINANCE, INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | Aug 15, 1978 | Forfeited |
| SWANTOWN HILL CORPORATIONMystic, CT · Forfeited | Mystic, CT | Corporation | Sep 27, 1978 | Forfeited |
| R. G. WHIPPLE, INC.Mystic, CT · Active | Mystic, CT | Corporation | Sep 29, 1978 | Active |
| DEVELOPMENT ASSOCIATES, INCORPORATEDMystic, CT · Dissolved | Mystic, CT | Corporation | Jun 12, 1964 | Dissolved |
| MYSTIC SEAPORT MUSEUM, INC.Mystic, CT · Active | Mystic, CT | Corporation | Jan 14, 1930 | Active |
| MARINE HISTORICAL ASSOCIATION, INCORPORATED THEMystic, CT · Merged | Mystic, CT | Corporation | Jan 31, 1974 | Merged |
| ROWE OF NEW LONDON, INC.Mystic, CT · Dissolved | Mystic, CT | Corporation | May 24, 1928 | Dissolved |
| CONNECTICUT SONGWRITERS ASSOCIATION, INC.Mystic, CT · Active | Mystic, CT | Corporation | May 21, 1979 | Active |
| SHELTERED COVE CONDOMINIUM ASSOCIATION, INC.Mystic, CT · Active | Mystic, CT | Corporation | Jun 21, 1979 | Active |
| J T K MANAGEMENT CORP.Mystic, CT · Forfeited | Mystic, CT | Corporation | Jul 26, 1979 | Forfeited |
| STEAMBOAT WHARF CONDOMINIUM ASSOCIATION, INC.Mystic, CT · Active | Mystic, CT | Corporation | Aug 6, 1979 | Active |
| Mystic Museum of Art, Inc.Mystic, CT · Active | Mystic, CT | Corporation | Jul 19, 1926 | Active |
| WESTCHESTER HILLS CONDOMINIUM ASSOCIATION, INC.Mystic, CT · Active | Mystic, CT | Corporation | Feb 15, 1980 | Active |
| COLONY ROOFING INDUSTRIES, INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | Jun 19, 1980 | Forfeited |
| JOHN I. CARIJA & SON BOATWORKS, INC.Mystic, CT · Dissolved | Mystic, CT | Corporation | Jun 19, 1980 | Dissolved |
| Seaport Marine, Inc.Mystic, CT · Active | Mystic, CT | Corporation | Dec 9, 1980 | Active |
| COUNSELING AND STRESS RESEARCH CENTER, INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | Dec 17, 1980 | Forfeited |
| NORWICH MOTEL, INC.Mystic, CT · Dissolved | Mystic, CT | Corporation | Jan 12, 1981 | Dissolved |
| EDW. PERRY, LTD.Mystic, CT · Dissolved | Mystic, CT | Corporation | Feb 10, 1981 | Dissolved |
| APRIL ENGINEERING CORP.Mystic, CT · Dissolved | Mystic, CT | Corporation | Feb 25, 1981 | Dissolved |
| SHORELINE NURSING MOTHERS GROUP, INC.Mystic, CT · Forfeited | Mystic, CT | Corporation | Apr 2, 1981 | Forfeited |
| RITA'S REST HOME, INC.Mystic, CT · Dissolved | Mystic, CT | Corporation | Apr 23, 1981 | Dissolved |