| JETCT, Inc.Southington, CT · Forfeited | Southington, CT | Corporation | Dec 3, 1971 | Forfeited |
| LIGHT METALS COLORING COMPANY, INCORPORATEDSouthington, CT · Active | Southington, CT | Corporation | Jan 16, 1952 | Active |
| LPOC, INC.Southington, CT · Dissolved | Southington, CT | Corporation | Sep 26, 1958 | Dissolved |
| COMPANION INDUSTRIES, INC.Southington, CT · Active | Southington, CT | Corporation | Jan 2, 1975 | Active |
| MASTERCRAFT TOOL AND MACHINE CO.Southington, CT · Active | Southington, CT | Corporation | Nov 7, 1968 | Active |
| MELDISCO K-M SOUTHINGTON, CONN., INC.Southington, CT · Merged | Southington, CT | Corporation | Aug 22, 1973 | Merged |
| MERIDEN BOX COMPANYSouthington, CT · Dissolved | Southington, CT | Corporation | Dec 29, 1961 | Dissolved |
| MT. SOUTHINGTON SKI AREA, INC.Southington, CT · Active | Southington, CT | Corporation | Mar 31, 1964 | Active |
| MOUNT VERNON INC.Southington, CT · Active | Southington, CT | Corporation | Oct 24, 1963 | Active |
| MRG SEARCH AND PLACEMENT, INC.Southington, CT · Active | Southington, CT | Corporation | May 11, 1976 | Active |
| NORTHEASTERN SHAPED WIRE, INC.Southington, CT · Active | Southington, CT | Corporation | Jul 12, 1976 | Active |
| NUTMEG BAKE SHOP, INC.Southington, CT · Forfeited | Southington, CT | Corporation | Dec 6, 1968 | Forfeited |
| O & D EXCAVATING INCORPORATEDSouthington, CT · Active | Southington, CT | Corporation | Apr 23, 1947 | Active |
| OWEN TOOL AND MANUFACTURING COMPANY, INC.Southington, CT · Forfeited | Southington, CT | Corporation | Sep 1, 1967 | Forfeited |
| P. HUTTON AND SON INCORPORATEDSouthington, CT · Forfeited | Southington, CT | Corporation | Jan 25, 1912 | Forfeited |
| P. J. DELAHUNTY, INC.Southington, CT · Forfeited | Southington, CT | Corporation | Jun 24, 1969 | Forfeited |
| PAUL'S GLASS INCORPORATED.Southington, CT · Dissolved | Southington, CT | Corporation | Jan 24, 1968 | Dissolved |
| PILGRIM COLONIAL, INC.Southington, CT · Dissolved | Southington, CT | Corporation | Aug 10, 1961 | Dissolved |
| PINE VALLEY GOLF COURSE, INCORPORATEDSouthington, CT · Dissolved | Southington, CT | Corporation | Jul 15, 1960 | Dissolved |
| PRECISION MANUFACTURING CO., INC.Southington, CT · Active | Southington, CT | Corporation | Sep 30, 1969 | Active |
| HMC MANUFACTURING COMPANYSouthington, CT · Dissolved | Southington, CT | Corporation | Jan 2, 1974 | Dissolved |
| R & R PLUMBING AND HEATING CONTRACTORS, INC.Southington, CT · Active | Southington, CT | Corporation | Apr 4, 1968 | Active |
| RALPH P. WARNER & SON, INC.Southington, CT · Active | Southington, CT | Corporation | Oct 24, 1972 | Active |
| RIDGEWOOD HEALTH CARE FACILITY, INC.Southington, CT · Dissolved | Southington, CT | Corporation | Jan 16, 1976 | Dissolved |
| ROBERT I. JACOB, D.D.S., P.C.Southington, CT · Dissolved | Southington, CT | Corporation | Nov 1, 1973 | Dissolved |
| ROCKWOOD HILLS, INC.Southington, CT · Active | Southington, CT | Corporation | Oct 3, 1960 | Active |
| ROGERS ORCHARDS, INCORPORATEDSouthington, CT · Active | Southington, CT | Corporation | Nov 5, 1945 | Active |
| SAL'S SUPER MARKET, INC.Southington, CT · Active | Southington, CT | Corporation | Dec 18, 1961 | Active |
| SERAFINO PHARMACY, INC.Southington, CT · Dissolved | Southington, CT | Corporation | Jun 27, 1967 | Dissolved |
| SOUTHINGTON AUTO PARTS INC.Southington, CT · Dissolved | Southington, CT | Corporation | May 14, 1973 | Dissolved |
| STANDARD REFRIGERATION COMPANY, INC.Southington, CT · Dissolved | Southington, CT | Corporation | Jul 7, 1977 | Dissolved |
| AMES & WHITAKER, ARCHITECTS, P.C.Southington, CT · Active | Southington, CT | Corporation | Jul 17, 1970 | Active |
| SULTANA ESTATES, INC.Southington, CT · Forfeited | Southington, CT | Corporation | Jan 12, 1977 | Forfeited |
| T & C GAROFALO CONSTRUCTION COMPANY, INC.Southington, CT · Active | Southington, CT | Corporation | Sep 22, 1967 | Active |
| T M I LIQUIDATING, INC.Southington, CT · Dissolved | Southington, CT | Corporation | Oct 1, 1965 | Dissolved |
| UTICA SPRING COMPANY, INCORPORATEDSouthington, CT · Active | Southington, CT | Corporation | Aug 14, 1956 | Active |
| VAL DEPAOLO & SONS, INC.Southington, CT · Dissolved | Southington, CT | Corporation | Dec 19, 1972 | Dissolved |
| VANGUARD PLASTICS CORPORATIONSouthington, CT · Active | Southington, CT | Corporation | Nov 6, 1972 | Active |
| PERONE INTERNATIONAL HAIR DESIGN, INC.Southington, CT · Active | Southington, CT | Corporation | May 19, 1967 | Active |
| WALLER CONSTRUCTION COMPANYSouthington, CT · Forfeited | Southington, CT | Corporation | Mar 21, 1972 | Forfeited |
| WASTE MATERIAL TRUCKING CO., INC.Southington, CT · Active | Southington, CT | Corporation | Dec 4, 1972 | Active |
| WProd Inc.Southington, CT · Dissolved | Southington, CT | Corporation | Jun 13, 1977 | Dissolved |
| WOOD & WOOD, INC.Southington, CT · Dissolved | Southington, CT | Corporation | Oct 10, 1958 | Dissolved |
| CONNECTICUT ASSOCIATION OF CHRISTIAN SCHOOLS, INC.Southington, CT · Forfeited | Southington, CT | Corporation | Aug 24, 1977 | Forfeited |
| SOUTHINGTON FESTIVAL CHOIR, INC., THESouthington, CT · Active | Southington, CT | Corporation | Jul 8, 1977 | Active |
| CAMP BURT-TETLOW FOUNDATION, INC.Southington, CT · Dissolved | Southington, CT | Corporation | Jan 8, 1969 | Dissolved |
| CASTLE APARTMENTS, INC.Southington, CT · Dissolved | Southington, CT | Corporation | May 8, 1970 | Dissolved |
| CONNECTICUT ADVENT CHRISTIAN CAMPMEETING ASSOCIATION, INCORPORATEDSouthington, CT · Active | Southington, CT | Corporation | Sep 6, 1922 | Active |
| CONNECTICUT ASSOCIATION OF INDEPENDENT SCHOOLS, INCORPORATEDSouthington, CT · Active | Southington, CT | Corporation | Aug 8, 1968 | Active |
| CONNECTICUT SPEECH-LANGUAGE-HEARING ASSOCIATION, INC.Southington, CT · Active | Southington, CT | Corporation | Sep 20, 1972 | Active |