| DENTAL ASSOCIATES OF SOUTHERN NEW ENGLAND, P.C.West. Haven, CT · Active | West. Haven, CT | Corporation | Nov 8, 1971 | Active |
| SR BUSINESS SYSTEMS, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Aug 3, 1973 | Active |
| TRIPLE CONSTRUCTION CO., INC.West. Haven, CT · Dissolved | West. Haven, CT | Corporation | Mar 31, 1975 | Dissolved |
| UNDERWATER SWIMMERS, INC.West. Haven, CT · Forfeited | West. Haven, CT | Corporation | Jan 20, 1969 | Forfeited |
| UNITED ELECTRICAL AND FUEL CORPORATION, THEWest. Haven, CT · Dissolved | West. Haven, CT | Corporation | Feb 21, 1939 | Dissolved |
| VINE PRODUCTS MANUFACTURING CO.W. Haven, CT · Dissolved | W. Haven, CT | Corporation | Jan 2, 1973 | Dissolved |
| WALTER P. KUZIEL, INC.West. Haven, CT · Forfeited | West. Haven, CT | Corporation | Mar 22, 1974 | Forfeited |
| WALTERS AUTOMOTIVE DISTRIBUTORS, INC.,West. Haven, CT · Active | West. Haven, CT | Corporation | Jan 16, 1953 | Active |
| WALTERS OF HARTFORD, INCORPORATEDWest. Haven, CT · Dissolved | West. Haven, CT | Corporation | Aug 2, 1966 | Dissolved |
| DESCONN, CORPORATIONWest. Haven, CT · Forfeited | West. Haven, CT | Corporation | Aug 13, 1976 | Forfeited |
| WERNER HARDT ASSOCIATES, INC.West. Haven, CT · Dissolved | West. Haven, CT | Corporation | Jul 29, 1966 | Dissolved |
| WEST HAVEN FUNERAL HOME, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Jun 25, 1964 | Active |
| WHL LIQUIDATING CORP.West. Haven, CT · Forfeited | West. Haven, CT | Corporation | Sep 7, 1935 | Forfeited |
| P.M.G. CONSTRUCTION, INC.West. Haven, CT · Forfeited | West. Haven, CT | Corporation | Apr 29, 1963 | Forfeited |
| WEST HAVEN SHEET METAL, INC.West. Haven, CT · Forfeited | West. Haven, CT | Corporation | Mar 21, 1968 | Forfeited |
| WESTVILLE-CREST PLUMBING & HEATING, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Jul 20, 1966 | Active |
| WHITE'S PLUMBING SUPPLIES, INC.W. Haven, CT · Active | W. Haven, CT | Corporation | Jan 15, 1973 | Active |
| WHITIE BENSEN ATHLETIC EQUIPMENT, INC.West. Haven, CT · Forfeited | West. Haven, CT | Corporation | Dec 29, 1976 | Forfeited |
| ANCHORAGE CONDOMINIUM, INC., THEWest. Haven, CT · Active | West. Haven, CT | Corporation | Sep 9, 1977 | Active |
| HARBORVIEW CONDOMINIUM ASSOCIATION, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Jul 27, 1977 | Active |
| CHRISTIAN AND MISSIONARY ALLIANCE CHURCH OF WEST HAVEN, INC., THEWest. Haven, CT · Forfeited | West. Haven, CT | Corporation | Jun 3, 1977 | Forfeited |
| ALLINGTOWN VOLUNTEER FIRE ASSOCIATION INCORPORATED, THEWest. Haven, CT · Active | West. Haven, CT | Corporation | Sep 4, 1909 | Active |
| CONNECTICUT STATE USBC ASSOCIATION, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Jan 11, 1965 | Active |
| CREATIVE CONCERTS, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Feb 6, 1975 | Active |
| N.A.L.C. FOUNDATION, INC.West. Haven, CT · Dissolved | West. Haven, CT | Corporation | Jun 17, 1970 | Dissolved |
| SIDNEY AND ARTHUR EDER FOUNDATION, INCORPORATED, THEWest. Haven, CT · Dissolved | West. Haven, CT | Corporation | Jun 24, 1954 | Dissolved |
| HARUGARI SINGING SOCIETY, INCORPORATED, THEWest. Haven, CT · Active | West. Haven, CT | Corporation | Apr 16, 1936 | Active |
| THE NEW HAVEN COUNTY USBC, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Nov 1, 1965 | Active |
| NOTRE DAME HIGH SCHOOL OF WEST HAVEN, INCORPORATEDWest. Haven, CT · Active | West. Haven, CT | Corporation | Jan 22, 1947 | Active |
| OCEAN VIEW CONDOMINIUM ASSOCIATION, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Jul 16, 1973 | Active |
| ORANGE VILLAGE ASSOCIATION, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Aug 7, 1973 | Active |
| PARENTS WITHOUT PARTNERS, INC., NEW HAVEN CHAPTER #111West. Haven, CT · Forfeited | West. Haven, CT | Corporation | Dec 29, 1969 | Forfeited |
| POLISH AMERICAN POLITICAL CLUB INCORPORATED, THEWest. Haven, CT · Active | West. Haven, CT | Corporation | Aug 29, 1939 | Active |
| INFANTE D. HENRIQUE PORTUGUESE AMERICAN COMMUNITY CENTER, INC.West. Haven, CT · Forfeited | West. Haven, CT | Corporation | Apr 12, 1948 | Forfeited |
| ROTARY CLUB OF WEST HAVEN, INCORPORATEDWest. Haven, CT · Active | West. Haven, CT | Corporation | May 13, 1970 | Active |
| SAVIN ROCK HOSE CO. #4, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Jul 14, 1966 | Active |
| SOUTHERN CONNECTICUT POP WARNER FOOTBALL LEAGUE INC.West. Haven, CT · Active | West. Haven, CT | Corporation | May 3, 1966 | Active |
| STEVENS HEIGHTS ENGINE AND HOSE CO. #5, INCORPORATED THEWest. Haven, CT · Active | West. Haven, CT | Corporation | Feb 26, 1946 | Active |
| VILLAGE IMPROVEMENT ASSOCIATION OF WEST HAVEN, INCORPORATEDWest. Haven, CT · Active | West. Haven, CT | Corporation | Jun 27, 1906 | Active |
| WEST HAVEN CHAPTER #18, DISABLED AMERICAN VETERANS BUILDING ASSOCIATION, INCORPORATED, THEWest. Haven, CT · Forfeited | West. Haven, CT | Corporation | Oct 17, 1949 | Forfeited |
| WEST HAVEN COUNCIL OF THE ARTS, INCORPORATEDWest. Haven, CT · Dissolved | West. Haven, CT | Corporation | Nov 27, 1974 | Dissolved |
| WEST HAVEN LODGE, NO. 1537, BENEVOLENT AND PROTECTIVE ORDER OF ELKS OF THE UNITED STATES OF AMERICA,West. Haven, CT · Active | West. Haven, CT | Corporation | Oct 3, 1927 | Active |
| WEST HAVEN ENGINE AND HOSE COMPANY NUMBER 1West. Haven, CT · Active | West. Haven, CT | Corporation | Dec 6, 1895 | Active |
| WEST HAVEN HIGH SCHOOL BAND PARENTS ASSOCIATION, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Jul 9, 1969 | Active |
| THE WEST HAVEN HISTORICAL SOCIETY INCORPORATEDWest. Haven, CT · Active | West. Haven, CT | Corporation | Feb 8, 1960 | Active |
| WEST HAVEN ITALIAN AMERICAN CIVIC ASSOCIATION, INCORPORATEDWest. Haven, CT · Active | West. Haven, CT | Corporation | Oct 28, 1958 | Active |
| WEST HAVEN RIFLE AND PISTOL CLUB, INC., THEWest. Haven, CT · Dissolved | West. Haven, CT | Corporation | Apr 1, 1958 | Dissolved |
| WOODMONT FARMERS AND SPORTSMENS ASSOCIATION INCORPORATED, THEWest. Haven, CT · Forfeited | West. Haven, CT | Corporation | Dec 22, 1949 | Forfeited |
| YESHIVA GEDOLAH RABBINICAL INSTITUTE OF NEW ENGLAND, INC.West. Haven, CT · Active | West. Haven, CT | Corporation | Jun 24, 1976 | Active |
| ARBEITER MAENNERCHOR, INCORPORATEDWest. Haven, CT · Active | West. Haven, CT | Corporation | Apr 3, 1923 | Active |