| COLEMAN BROTHERS SHOWS, INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | Jan 8, 1951 | Active |
| MIDDLETOWN PAINT & ART, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Jan 8, 1964 | Dissolved |
| CONNECTICUT DATA SYSTEMS, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Sep 17, 1976 | Dissolved |
| CONNECTICUT UNDERWRITERS, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Jul 6, 1964 | Dissolved |
| COUGHLIN & COMPANYMiddletown, CT · Forfeited | Middletown, CT | Corporation | Jul 16, 1971 | Forfeited |
| CRELE CONSTRUCTION CORPORATIONMiddletown, CT · Revoked | Middletown, CT | Corporation | Mar 6, 1962 | Revoked |
| CROMWELL CREST CONVALESCENT HOME, INC.Middletown, CT · Forfeited | Middletown, CT | Corporation | Jun 19, 1959 | Forfeited |
| DITTMAN AND GREER, INCORPORATEDMiddletown, CT · Merged | Middletown, CT | Corporation | Jul 31, 1950 | Merged |
| DOOLITTLE FUNERAL SERVICE, INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | Sep 29, 1953 | Active |
| DZIALO, PICKETT & ALLEN, P.C.Middletown, CT · Active | Middletown, CT | Corporation | Dec 30, 1971 | Active |
| U.S. ELECTRICAL SERVICES, INC.Middletown, CT · Active | Middletown, CT | Corporation | May 6, 1970 | Active |
| FJF REALTY, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Jul 1, 1977 | Dissolved |
| FORTUNA & CARTELLI, P. C.Middletown, CT · Active | Middletown, CT | Corporation | Oct 18, 1972 | Active |
| CENTRAL CONNECTICUT EYE PHYSICIANS, P.C.Middletown, CT · Dissolved | Middletown, CT | Corporation | Dec 7, 1973 | Dissolved |
| GEORGE G. WHITMORE COMPANY, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Dec 16, 1963 | Dissolved |
| GIUFFRIDA ELECTRIC CO. INC.Middletown, CT · Active | Middletown, CT | Corporation | Feb 14, 1968 | Active |
| WOODWARD TOWN AND COUNTRY PHARMACY, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Oct 15, 1959 | Dissolved |
| 1842, LTD.Middletown, CT · Dissolved | Middletown, CT | Corporation | Jun 28, 1950 | Dissolved |
| HIGGINS FARM, INC.Middletown, CT · Active | Middletown, CT | Corporation | Feb 16, 1972 | Active |
| JOSEPH H. MYLCHREEST INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | Dec 14, 1939 | Active |
| LABCO WELDING, INC.Middletown, CT · Active | Middletown, CT | Corporation | Aug 7, 1974 | Active |
| LA BOCA, INC.Middletown, CT · Active | Middletown, CT | Corporation | Nov 5, 1975 | Active |
| LERNER'S FURS, INCORPORATEDMiddletown, CT · Dissolved | Middletown, CT | Corporation | Aug 20, 1953 | Dissolved |
| LITTLE PEOPLE'S HOUSE, INC. THEMiddletown, CT · Dissolved | Middletown, CT | Corporation | Jan 15, 1970 | Dissolved |
| M.A. AND M., INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | Jan 28, 1957 | Active |
| MSR, INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | Feb 1, 1963 | Active |
| MACANDREW'S, INC.Middletown, CT · Forfeited | Middletown, CT | Corporation | Dec 3, 1976 | Forfeited |
| MARINO MAIN REALTY, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Oct 30, 1962 | Dissolved |
| MARINO PLUMBING & HEATING CO., INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Jan 19, 1971 | Dissolved |
| MARINO PROFESSIONAL BUILDING, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Jan 22, 1963 | Dissolved |
| MEADOW MEAT COMPANY, INC.Middletown, CT · Active | Middletown, CT | Corporation | Jul 27, 1964 | Active |
| MIDDLESEX OBSTETRICAL & GYNECOLOGICAL ASSOCIATES, P.C.Middletown, CT · Dissolved | Middletown, CT | Corporation | Oct 1, 1971 | Dissolved |
| MIDDLESEX ORTHOPEDIC SURGEONS, P.C.Middletown, CT · Forfeited | Middletown, CT | Corporation | Jan 6, 1971 | Forfeited |
| CONNECTICUT PATHOLOGY GROUP, P.C.Middletown, CT · Active | Middletown, CT | Corporation | Oct 12, 1972 | Active |
| MIDDLETOWN ELKS' HOME CORPORATIONMiddletown, CT · Active | Middletown, CT | Corporation | May 5, 1906 | Active |
| MIDDLETOWN LABOR COUNCIL BUILDING, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Oct 30, 1961 | Dissolved |
| MIDDLETOWN PLATE GLASS COMPANYMiddletown, CT · Dissolved | Middletown, CT | Corporation | Dec 26, 1967 | Dissolved |
| MIDDLETOWN SIRLOIN PITS, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Jul 12, 1976 | Dissolved |
| KLIMAS ENTERPRISES, INC.Middletown, CT · Active | Middletown, CT | Corporation | Jul 22, 1975 | Active |
| MIDDLETOWN TOYOTA RENTAL CORP.Middletown, CT · Active | Middletown, CT | Corporation | Apr 12, 1976 | Active |
| MIDFIELD CORPORATIONMiddletown, CT · Merged | Middletown, CT | Corporation | May 6, 1969 | Merged |
| MOHAWK MANUFACTURING COMPANY, THEMiddletown, CT · Active | Middletown, CT | Corporation | Apr 23, 1921 | Active |
| NATIONAL PAINT & WALLPAPER OF MIDDLETOWN, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Jun 4, 1964 | Dissolved |
| NORTHEAST BALANCE SERVICE, INC.Middletown, CT · Active | Middletown, CT | Corporation | Jan 10, 1975 | Active |
| NORPACO, INC.Middletown, CT · Active | Middletown, CT | Corporation | Apr 6, 1959 | Active |
| LABBADIA CARROCCIA CHIROPRACTIC OFFICES, P.C.Middletown, CT · Active | Middletown, CT | Corporation | Nov 12, 1974 | Active |
| PINE ELECTRIC PRODUCTS COMPANY, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Oct 11, 1972 | Dissolved |
| QUALITY INSULATION, INC.Middletown, CT · Merged | Middletown, CT | Corporation | May 29, 1975 | Merged |
| R. J. HARTMAN, INCORPORATEDMiddletown, CT · Forfeited | Middletown, CT | Corporation | Jan 22, 1946 | Forfeited |
| RADIOLOGIC ASSOCIATES OF MIDDLETOWN, P.C.Middletown, CT · Active | Middletown, CT | Corporation | Aug 3, 1970 | Active |