| LAND ENTERPRISES, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | Oct 14, 1970 | Dissolved |
| MACOSKY INSURANCE AGENCY, INC.East Haven, CT · Dissolved | East Haven, CT | Corporation | Jan 3, 1977 | Dissolved |
| MAINE LINE, INC.E. Haven, CT · Dissolved | E. Haven, CT | Corporation | Nov 3, 1965 | Dissolved |
| MANELL COMPANY, THEEast Haven, CT · Dissolved | East Haven, CT | Corporation | Mar 8, 1955 | Dissolved |
| MANSFIELD GROVE CAMPERS ASSOCIATION, INC.East Haven, CT · Active | East Haven, CT | Corporation | Jan 7, 1966 | Active |
| MAROTTI CRANE SERVICE, INC.East Haven, CT · Dissolved | East Haven, CT | Corporation | Oct 19, 1973 | Dissolved |
| BELLUCCI & SONS, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | Feb 17, 1977 | Dissolved |
| MCGUINESS CORPORATION, THEEast Haven, CT · Active | East Haven, CT | Corporation | May 14, 1946 | Active |
| MELDISCO K-M FRONTAGE RD., CONN., INC.East Haven, CT · Dissolved | East Haven, CT | Corporation | Jan 31, 1975 | Dissolved |
| NEW HAVEN MOVING EQUIPMENT CORP.East Haven, CT · Merged | East Haven, CT | Corporation | Dec 28, 1965 | Merged |
| NEW HAVEN ORAL AND MAXILLOFACIAL SURGERY ASSOCIATES, P.C.East Haven, CT · Active | East Haven, CT | Corporation | May 3, 1976 | Active |
| ONOFRIO'S J. & E. ENTERPRISES, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | Sep 23, 1968 | Dissolved |
| PROGRESSIVE PACKAGING CORPORATION.East Haven, CT · Dissolved | East Haven, CT | Corporation | Dec 2, 1952 | Dissolved |
| PUBLIC ADJUSTMENT BUREAU OF AMERICA, INC.East Haven, CT · Dissolved | East Haven, CT | Corporation | Oct 16, 1972 | Dissolved |
| ROYAL LOUNGE CO., INCORPORATEDNew Haven, CT · Dissolved | New Haven, CT | Corporation | Nov 27, 1945 | Dissolved |
| VIGLIONE HEATING AND COOLING, INC.East Haven, CT · Active | East Haven, CT | Corporation | Sep 3, 1971 | Active |
| SUPERIOR SEWER, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | May 19, 1961 | Dissolved |
| T & J FOOD MARKETS, INC.East Haven, CT · Active | East Haven, CT | Corporation | Jul 19, 1971 | Active |
| TIRE CENTER, INC. THENew Haven, CT · Active | New Haven, CT | Corporation | Dec 20, 1976 | Active |
| TORELLO TIRE COMPANY, INCORPORATEDEast Haven, CT · Dissolved | East Haven, CT | Corporation | Aug 2, 1965 | Dissolved |
| WOODBRIDGE SPORTSMEN CLUB, INCORPORATEDEast Haven, CT · Active | East Haven, CT | Corporation | Jun 27, 1967 | Active |
| ZODIAC HEALTH STUDIO, INC.East Haven, CT · Dissolved | East Haven, CT | Corporation | Jul 26, 1973 | Dissolved |
| ANNEX Y.M.A. LITTLE LEAGUE, INCORPORATED,THENew Haven, CT · Active | New Haven, CT | Corporation | Mar 11, 1954 | Active |
| THE ANNEX YOUNG MEN'S ASSOCIATION, INCORPORATEDNew Haven, CT · Active | New Haven, CT | Corporation | Jun 19, 1940 | Active |
| BRANFORD ELECTRIC RAILWAY ASSOCIATION, INCORPORATED THEEast Haven, CT · Active | East Haven, CT | Corporation | Aug 14, 1945 | Active |
| CONNECTICUT COUNCIL FOR THE SOCIAL STUDIES, INC., THENew Haven, CT · Active | New Haven, CT | Corporation | Apr 4, 1963 | Active |
| EAST HAVEN HISTORICAL SOCIETY, INCORPORATED, THEEast Haven, CT · Active | East Haven, CT | Corporation | Jul 22, 1969 | Active |
| EAST HAVEN PUBLIC LIBRARY, INCORPORATEDEast Haven, CT · Active | East Haven, CT | Corporation | Apr 13, 1921 | Active |
| EAST HAVEN VOLUNTEER FIREMEN'S ASSOCIATION, INCORPORATED, THEEast Haven, CT · Active | East Haven, CT | Corporation | Dec 20, 1956 | Active |
| EAST HAVEN YOUTH HOCKEY ASSOCIATION, INC.East Haven, CT · Active | East Haven, CT | Corporation | Sep 19, 1973 | Active |
| EAST LAWN ASSOCIATION, INCORPORATEDEast Haven, CT · Forfeited | East Haven, CT | Corporation | Nov 10, 1953 | Forfeited |
| EAST LAWN PERPETUAL TRUST FUND INCORPORATEDEast Haven, CT · Active | East Haven, CT | Corporation | Apr 22, 1930 | Active |
| ELM CITY GUN CLUB, INCORPORATED, THEEast Haven, CT · Active | East Haven, CT | Corporation | Mar 30, 1949 | Active |
| FORT NATHAN HALE RESTORATION PROJECTS, INC., THENew Haven, CT · Forfeited | New Haven, CT | Corporation | Nov 18, 1969 | Forfeited |
| HARRY R. BARTLETT, POST #89, AMERICAN LEGION, INC.East Haven, CT · Active | East Haven, CT | Corporation | Mar 28, 1924 | Active |
| NEW HAVEN GAELIC FOOTBALL AND HURLING CLUB INCORPORATED, THEEast Haven, CT · Active | East Haven, CT | Corporation | Apr 10, 1958 | Active |
| PRO-LIFE COUNCIL, INC.East Haven, CT · Forfeited | East Haven, CT | Corporation | Jun 6, 1973 | Forfeited |
| SHEPARD HILL ASSOCIATION, INC.East Haven, CT · Active | East Haven, CT | Corporation | Jan 9, 1973 | Active |
| SISTERS OF CHARITY OF OUR LADY MOTHER OF MERCY CORPORATIONEast Haven, CT · Forfeited | East Haven, CT | Corporation | Nov 11, 1890 | Forfeited |
| TADEUSZ KOSCIUSZKO SOCIETY, GROUP NO. 103, INCORPORATEDEast Haven, CT · Dissolved | East Haven, CT | Corporation | Oct 30, 1945 | Dissolved |
| YALE AVIATION, INCORPORATEDEast Haven, CT · Active | East Haven, CT | Corporation | Nov 18, 1964 | Active |
| PARKSIDE CONDOMINIUM, INC.East Haven, CT · Forfeited | East Haven, CT | Corporation | Feb 17, 1972 | Forfeited |
| MARINE CADETS OF AMERICA INC.New Haven, CT · Active | New Haven, CT | Corporation | Jun 17, 1963 | Active |
| GAMBARDELLA'S WHOLESALE FISH DEALER, INC.East Haven, CT · Active | East Haven, CT | Corporation | Dec 9, 1977 | Active |
| TALMADGE PARK, INCORPORATEDEast Haven, CT · Forfeited | East Haven, CT | Corporation | Jan 30, 1978 | Forfeited |
| P.C. MOTORS, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | Jun 5, 1978 | Dissolved |
| A. PRETE & SON CONSTRUCTION CO.INCORPORATEDNew Haven, CT · Forfeited | New Haven, CT | Corporation | Jan 26, 1959 | Forfeited |
| CALABRO CHEESE CORPORATIONEast Haven, CT · Active | East Haven, CT | Corporation | Sep 4, 1951 | Active |
| DAVID MCDERMOTT CHEVROLET INC.East Haven, CT · Dissolved | East Haven, CT | Corporation | Aug 29, 1923 | Dissolved |
| OCEAN ENGINEERING, INC.East Haven, CT · Forfeited | East Haven, CT | Corporation | Jan 12, 1979 | Forfeited |