| MASTEN-WRIGHT INC.North Haven, CT · Active | North Haven, CT | Corporation | Jul 28, 1976 | Active |
| SIDETEX COMPANY, INC.North Haven, CT · Forfeited | North Haven, CT | Corporation | Apr 3, 1978 | Forfeited |
| KL Process Equipment Inc.North Haven, CT · Dissolved | North Haven, CT | Corporation | Oct 23, 1946 | Dissolved |
| MEROLA MOTORS, INCORPORATEDNorth Haven, CT · Active | North Haven, CT | Corporation | May 8, 1978 | Active |
| COACH AUTO BODY, INC.North Haven, CT · Active | North Haven, CT | Corporation | May 16, 1978 | Active |
| BPB LIQUIDATING, INC.North Haven, CT · Forfeited | North Haven, CT | Corporation | Jun 6, 1978 | Forfeited |
| JO-DI'S OF NORTH HAVEN, INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Jul 17, 1978 | Dissolved |
| SOUTHERN CONNECTICUT ASSOCIATION OF OCCUPATIONAL HEALTH NURSES, INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Aug 23, 1978 | Dissolved |
| Cowles & CompanyNorth Haven, CT · Active | North Haven, CT | Corporation | Apr 2, 1855 | Active |
| COMMUNITY HEALTH CHARITIES OF SOUTH CENTRAL CONNECTICUT, INC.North Haven, CT · Merged | North Haven, CT | Corporation | Dec 20, 1978 | Merged |
| JOSEPH COHN AND SON, INC.North Haven, CT · Forfeited | North Haven, CT | Corporation | Apr 2, 1959 | Forfeited |
| H. PEARCE REAL ESTATE COMPANY, INC.North Haven, CT · Active | North Haven, CT | Corporation | May 8, 1956 | Active |
| PEVETTY EQUIPMENT COMPANY THENorth Haven, CT · Forfeited | North Haven, CT | Corporation | May 9, 1934 | Forfeited |
| RIGHT WAY HOME REPAIR SERVICE, INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Jan 10, 1979 | Dissolved |
| HAMDEN FATHERS' BASKETBALL ASSOCIATION, INC. THENorth Haven, CT · Active | North Haven, CT | Corporation | Jan 11, 1979 | Active |
| HARNO (NORWICH), INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Mar 26, 1969 | Dissolved |
| NORTH HAVEN AUTO SALES & SERVICE, INCORPORATEDNorth Haven, CT · Forfeited | North Haven, CT | Corporation | Jul 22, 1948 | Forfeited |
| COLONIAL BUSINESS FORMS, INCORPORATEDNorth Haven, CT · Active | North Haven, CT | Corporation | Sep 27, 1950 | Active |
| PET-CAR PRODUCTS, INCORPORATEDNorth Haven, CT · Dissolved | North Haven, CT | Corporation | Mar 28, 1947 | Dissolved |
| ANGELETTI CONSTRUCTION COMPANY, INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Feb 2, 1979 | Dissolved |
| NEWTON-NEW HAVEN CO. THENorth Haven, CT · Revoked | North Haven, CT | Corporation | Jan 3, 1931 | Revoked |
| UNITED ALUMINUM CORPORATIONNorth Haven, CT · Active | North Haven, CT | Corporation | Jan 17, 1916 | Active |
| THE CENTRAL HOSPITAL FOR VETERINARY MEDICINE, INC.North Haven, CT · Active | North Haven, CT | Corporation | Aug 28, 1974 | Active |
| LOUIS ASSOCIATES, INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Apr 10, 1979 | Dissolved |
| WILLIAM J. MACK COMPANY THENorth Haven, CT · Dissolved | North Haven, CT | Corporation | Sep 23, 1922 | Dissolved |
| H. M. BULLARD COMPANYNo. Haven, CT · Dissolved | No. Haven, CT | Corporation | Nov 3, 1904 | Dissolved |
| ULBRICH STAINLESS STEELS & SPECIAL METALS, INC.North Haven, CT · Active | North Haven, CT | Corporation | Oct 31, 1955 | Active |
| GEORGE D. PORTO PLUMBING & HEATING, INC.North Haven, CT · Active | North Haven, CT | Corporation | Jun 5, 1979 | Active |
| GENERAL DRAFTING & DESIGN, INC.North Haven, CT · Active | North Haven, CT | Corporation | Jun 20, 1979 | Active |
| NEO ROLL COMPANY, INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Jul 12, 1979 | Dissolved |
| ANCHOR SERVICES CORPORATIONNorth Haven, CT · Dissolved | North Haven, CT | Corporation | Aug 15, 1979 | Dissolved |
| F. W. CLARK & SONS, INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Sep 12, 1979 | Dissolved |
| HORIZONS HOUSING DEVELOPERS, INCORPORATEDNorth Haven, CT · Active | North Haven, CT | Corporation | Sep 18, 1979 | Active |
| NORTH HAVEN CLEANERS, INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Oct 2, 1979 | Dissolved |
| FINANCIAL UNDERWRITERS, INC.North Haven, CT · Active | North Haven, CT | Corporation | Oct 24, 1979 | Active |
| VERNERIS QUALITY SIDING COMPANY OF NORTHFORD, INC.North Haven, CT · Dissolved | North Haven, CT | Corporation | Oct 31, 1979 | Dissolved |
| NEW HAVEN COUNTY CREDIT UNION, INC.North Haven, CT · Active | North Haven, CT | Other | Mar 15, 1963 | Active |
| HALOVATCH MECHANICAL, INC.North Haven, CT · Active | North Haven, CT | Corporation | Nov 1, 1979 | Active |
| HART UNITED, INC.North Haven, CT · Active | North Haven, CT | Corporation | Dec 5, 1979 | Active |
| CONNECTICUT B.A.S.S. NATION, INC.North Haven, CT · Active | North Haven, CT | Corporation | Dec 6, 1979 | Active |
| AMERICAN ASSOCIATION OF INDUSTRIAL MANAGEMENT OF CONNECTICUT/NATIONAL METAL TRADES ASSOCIATION, INC.North Haven, CT · Merged | North Haven, CT | Corporation | Jul 3, 1961 | Merged |
| NORTH HAVEN ANIMAL HOSPITAL, P.C.North Haven, CT · Active | North Haven, CT | Corporation | Dec 10, 1979 | Active |
| GREATER NEW HAVEN ASSOCIATION OF REALTORS, INC.North Haven, CT · Merged | North Haven, CT | Corporation | Sep 17, 1956 | Merged |
| GIRL SCOUTS, CONNECTICUT TRAILS COUNCIL, INC.North Haven, CT · Merged | North Haven, CT | Corporation | Dec 11, 1957 | Merged |
| ACME LOCK AND SAFE, INC.North Haven, CT · Active | North Haven, CT | Corporation | Jan 2, 1980 | Active |
| TRUMBULL GRAPHICS INC.North Haven, CT · Forfeited | North Haven, CT | Corporation | Jan 2, 1980 | Forfeited |
| ABC COLOR, INC.North Haven, CT · Forfeited | North Haven, CT | Corporation | Jan 10, 1980 | Forfeited |
| THE ANIMAL HAVEN, INCORPORATEDNorth Haven, CT · Active | North Haven, CT | Corporation | Jan 26, 1948 | Active |
| NEW SAMARITAN FAMILY HOUSING, INCORPORATEDNorth Haven, CT · Dissolved | North Haven, CT | Corporation | Jan 16, 1980 | Dissolved |
| GOODWILL INDUSTRIES OF SOUTHERN NEW ENGLAND, INC.North Haven, CT · Active | North Haven, CT | Corporation | Dec 15, 1953 | Active |