| HAGMAN'S INCORPORATEDNew Haven, CT · Active | New Haven, CT | Corporation | Sep 1, 1949 | Active |
| ENDODONTICARE, P.C.New Haven, CT · Dissolved | New Haven, CT | Corporation | Oct 8, 1971 | Dissolved |
| GUSTIN & COMPANY, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | Apr 27, 1976 | Dissolved |
| KENNEDY AND PERKINS, INCORPORATEDNew Haven, CT · Active | New Haven, CT | Corporation | Dec 27, 1961 | Active |
| KENNEDY AND PERKINS OF WEST HAVEN, INCORPORATEDNew Haven, CT · Dissolved | New Haven, CT | Corporation | Jul 9, 1975 | Dissolved |
| LEVY, LEFF, DEFRANK & ARMAS, P.C.New Haven, CT · Active | New Haven, CT | Corporation | May 1, 1973 | Active |
| NORTHEASTERN CAPITAL CORPORATIONNew Haven, CT · Dissolved | New Haven, CT | Corporation | Jan 9, 1961 | Dissolved |
| MARSHAL D. GIBSON, PROFESSIONAL CORPORATIONNew Haven, CT · Active | New Haven, CT | Corporation | Sep 21, 1976 | Active |
| MCLAUGHLIN, DEL VECCHIO & CASEY, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | May 9, 1972 | Dissolved |
| METIL, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | Oct 25, 1976 | Dissolved |
| CONNECTICUT NEUROSCIENCE, P.C.New Haven, CT · Dissolved | New Haven, CT | Corporation | Sep 2, 1969 | Dissolved |
| NEWHALL PACKAGE STORE, INCORPORATEDNew Haven, CT · Dissolved | New Haven, CT | Corporation | Jun 16, 1958 | Dissolved |
| PHILIP W. GENOVESE & ASSOCIATES, INC.New Haven, CT · Active | New Haven, CT | Corporation | Aug 2, 1973 | Active |
| PLASTIC & RECONSTRUCTIVE SURGERY P.C.New Haven, CT · Dissolved | New Haven, CT | Corporation | Mar 30, 1972 | Dissolved |
| SLV CORP.New Haven, CT · Dissolved | New Haven, CT | Corporation | Feb 4, 1977 | Dissolved |
| SCHIAVONE REALTY AND DEVELOPMENT CORP.New Haven, CT · Merged | New Haven, CT | Corporation | Mar 15, 1966 | Merged |
| SHEMCO, INCORPORATEDNew Haven, CT · Dissolved | New Haven, CT | Corporation | Sep 4, 1953 | Dissolved |
| SILVERSTEIN & OSACH, P. C.New Haven, CT · Dissolved | New Haven, CT | Corporation | Jul 9, 1973 | Dissolved |
| BENSON A. SNAIDER, P.C.New Haven, CT · Dissolved | New Haven, CT | Corporation | Dec 18, 1975 | Dissolved |
| SURGICAL ASSOCIATES OF NEW HAVEN, P.C.New Haven, CT · Active | New Haven, CT | Corporation | Aug 12, 1969 | Active |
| SOUND OBSTETRICS AND GYNECOLOGY, P.C.New Haven, CT · Active | New Haven, CT | Corporation | Jul 5, 1977 | Active |
| ARTS COUNCIL OF GREATER NEW HAVEN, INC., THENew Haven, CT · Active | New Haven, CT | Corporation | Jul 29, 1965 | Active |
| BEAUMONT MEDICAL CLUB INCORPORATEDNew Haven, CT · Forfeited | New Haven, CT | Corporation | Oct 27, 1925 | Forfeited |
| HEALTHY EYES ALLIANCE, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | Mar 12, 1964 | Dissolved |
| ALSO-CORNERSTONE, INC.New Haven, CT · Merged | New Haven, CT | Corporation | Jul 17, 1968 | Merged |
| COUNCIL OF AMERICAN MARITIME MUSEUMS, INC., THENew Haven, CT · Active | New Haven, CT | Corporation | Oct 18, 1974 | Active |
| CREATIVE ARTS WORKSHOP, INC.New Haven, CT · Active | New Haven, CT | Corporation | Aug 2, 1961 | Active |
| FORESIGHT, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | Dec 18, 1967 | Dissolved |
| FREDERICK A. AND JUSTINE MILLSPAUGH CATLIN FAMILY FOUNDATION, INCORPORATED THENew Haven, CT · Dissolved | New Haven, CT | Corporation | Jul 10, 1956 | Dissolved |
| JOHN F. FULTON ASSOCIATES, INC.New Haven, CT · Forfeited | New Haven, CT | Corporation | Aug 6, 1951 | Forfeited |
| KNIGHTS OF COLUMBUS CHARITIES, INC.New Haven, CT · Active | New Haven, CT | Corporation | Nov 22, 1972 | Active |
| NATURE CONSERVANCY OF CONNECTICUT, INC., THENew Haven, CT · Merged | New Haven, CT | Corporation | Jul 9, 1958 | Merged |
| NEW HAVEN LEGAL ASSISTANCE ASSOCIATION, INC.New Haven, CT · Active | New Haven, CT | Corporation | Apr 8, 1964 | Active |
| VOLUNTEER ACTION CENTER OF GREATER NEW HAVEN, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | May 17, 1977 | Dissolved |
| WESTERN NEW ENGLAND INSTITUTE FOR PSYCHOANALYSIS, INCORPORATED, THENew Haven, CT · Active | New Haven, CT | Corporation | Jun 29, 1953 | Active |
| YALE CLUB OF NEW HAVEN, INCORPORATED, THENew Haven, CT · Active | New Haven, CT | Corporation | Apr 17, 1969 | Active |
| YALE COOPERATIVE CORPORATIONNew Haven, CT · Forfeited | New Haven, CT | Corporation | Dec 23, 1892 | Forfeited |
| BERGMAN, HOROWITZ & REYNOLDS, P.C.New Haven, CT · Dissolved | New Haven, CT | Corporation | Jul 1, 1970 | Dissolved |
| HALSEY ASSOCIATES, INCORPORATEDNew Haven, CT · Merged | New Haven, CT | Corporation | Jan 3, 1978 | Merged |
| BEERS, HAMERMAN & CO., P.C.New Haven, CT · Merged | New Haven, CT | Corporation | Jan 6, 1978 | Merged |
| STEPHAN L. HILCOFF, P.C.New Haven, CT · Dissolved | New Haven, CT | Corporation | Jan 17, 1978 | Dissolved |
| CARDIOLOGY ASSOCIATES OF NEW HAVEN, P.C.New Haven, CT · Dissolved | New Haven, CT | Corporation | Oct 11, 1977 | Dissolved |
| YALE ALUMNI PUBLICATIONS, INCORPORATEDNew Haven, CT · Dissolved | New Haven, CT | Corporation | Feb 19, 1937 | Dissolved |
| NEW HAVEN SECURITIES, INCORPORATEDNew Haven, CT · Dissolved | New Haven, CT | Corporation | May 9, 1952 | Dissolved |
| BOOK HAVEN, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | May 15, 1978 | Dissolved |
| KAISER WHITNEY STAFFING, INC.New Haven, CT · Active | New Haven, CT | Corporation | Jun 8, 1978 | Active |
| AUDIO GROUP, INC.New Haven, CT · Dissolved | New Haven, CT | Corporation | Aug 17, 1978 | Dissolved |
| ENVIRONMENTAL LABORATORIES, INC.New Haven, CT · Active | New Haven, CT | Corporation | Jun 6, 1974 | Active |
| ACME OFFICE FURNITURE COMPANY, INC.New Haven, CT · Forfeited | New Haven, CT | Corporation | Nov 15, 1934 | Forfeited |
| ATLAS REALTY AND SECURITIES CORPORATION THENew Haven, CT · Dissolved | New Haven, CT | Corporation | Nov 9, 1950 | Dissolved |