| COMPOSITE MATERIALS CORPORATIONLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jan 9, 1974 | Withdrawn |
| COMPUGRAPHIC CORPORATIONLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Jul 1, 1975 | Revoked |
| COMPUSERVE INCORPORATEDLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 12, 1976 | Withdrawn |
| COMPUTER BUSINESS SUPPLIES OF WASHINGTON, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Oct 14, 1975 | Revoked |
| COMPUTER CONSOLES, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 12, 1974 | Revoked |
| COMPUTER LEASING COMPANYLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Oct 3, 1969 | Withdrawn |
| COMPUTER SYSTEMS RESEARCH, INC.Location not reported, CT · Merged | Location not reported, CT | Corporation | Jul 24, 1974 | Merged |
| COMPUTER TERMINAL CORPORATIONLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Feb 5, 1973 | Withdrawn |
| COMPUTREND, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jul 12, 1974 | Withdrawn |
| COMTEN, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 23, 1974 | Revoked |
| CONCEPT OF CONNECTICUT INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | May 26, 1969 | Dissolved |
| CONCRETE PLANK CO. INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Jan 2, 1951 | Revoked |
| CONE SALES CORP.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Dec 13, 1974 | Withdrawn |
| FULL CIRCLE MEDIA CORPORATIONNorwalk, CT · Forfeited | Norwalk, CT | Corporation | Aug 19, 1976 | Forfeited |
| CIGNA INVESTMENTS, INC.Hartford, CT · Active | Hartford, CT | Corporation | Mar 2, 1970 | Active |
| CONNECTICUT BANCSHARES CORPORATIONLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Aug 17, 1971 | Dissolved |
| CONNECTICUT COINING, INC.Bethel, CT · Active | Bethel, CT | Corporation | Feb 14, 1963 | Active |
| CONNECTICUT EXPLORATION CORPORATIONLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Oct 21, 1963 | Dissolved |
| CONNECTICUT G.R. KINNEY CO. INC. THELocation not reported, CT · Forfeited | Location not reported, CT | Corporation | Apr 24, 1956 | Forfeited |
| CONNECTICUT GRAPHICS, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 14, 1976 | Revoked |
| CONNECTICUT HEAT AND FUEL COMPANY, THELocation not reported, CT · Merged | Location not reported, CT | Corporation | Oct 29, 1932 | Merged |
| HOMEOWNERS FINANCIAL SERVICES OF CONNECTICUT, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Jun 6, 1973 | Dissolved |
| CONNECTICUT NOW SHOP CORP.Location not reported, CT · Forfeited | Location not reported, CT | Corporation | Aug 3, 1972 | Forfeited |
| CONNECTICUT SONESTA CORPORATIONLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Nov 13, 1963 | Dissolved |
| CTI LIQUIDATING CORP.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Dec 13, 1972 | Dissolved |
| CONNECTICUT-THERMAL INC.Location not reported, CT · Forfeited | Location not reported, CT | Corporation | Nov 13, 1973 | Forfeited |
| CONRESCO CORPORATIONLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Apr 1, 1969 | Dissolved |
| CONSOLIDATED BRUSH COMPANY, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Dec 22, 1976 | Dissolved |
| CONSOLIDATED CIGAR CORPORATIONLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 15, 1968 | Withdrawn |
| SARA LEE CREDIT CORPORATIONLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Jun 27, 1975 | Revoked |
| CONN-FORM CORPORATIONLocation not reported, CT · Merged | Location not reported, CT | Corporation | Apr 8, 1959 | Merged |
| CONTICOMMODITY SERVICES, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Dec 3, 1976 | Revoked |
| BEKER SHIPPING COMPANYLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 24, 1975 | Revoked |
| CONTINENTAL CAN INTERNATIONAL CORPORATIONLocation not reported, CT · Forfeited | Location not reported, CT | Corporation | Jun 24, 1975 | Forfeited |
| CONOCO INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Feb 28, 1950 | Withdrawn |
| CONTINENTAL-SHELLMAR INCORPORATEDLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Jun 24, 1975 | Revoked |
| CONTROL SYSTEMS RESEARCH, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jun 27, 1974 | Withdrawn |
| CONVENIENT INDUSTRIES OF AMERICA, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Apr 16, 1973 | Revoked |
| CONWED CORPORATIONLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Aug 8, 1967 | Dissolved |
| COOK'S INDUSTRIAL LUBRICANTS, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Oct 26, 1970 | Revoked |
| COOPER-ATKINS CORPORATIONMiddlefield, CT · Merged | Middlefield, CT | Corporation | Nov 30, 1960 | Merged |
| SHELDON, INC.Location not reported, CT · Merged | Location not reported, CT | Corporation | Aug 10, 1972 | Merged |
| QUANTREX CORPORATIONLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 2, 1975 | Revoked |
| CORCO, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Nov 22, 1968 | Revoked |
| COSDEN OIL & CHEMICAL COMPANYLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Apr 30, 1973 | Withdrawn |
| BEVERAGE LIQUIDATING CORPORATIONLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Jul 1, 1968 | Revoked |
| COTT EXTRACT CORPORATIONLocation not reported, CT · Revoked | Location not reported, CT | Corporation | May 25, 1964 | Revoked |
| COUNTRY STORE OF CONCORD, MASSACHUSETTS, INC. THELocation not reported, CT · Revoked | Location not reported, CT | Corporation | Jun 17, 1965 | Revoked |
| COUNTY CAR & TRUCK LEASING, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Feb 22, 1977 | Revoked |
| COUNTY ELECTRIC CO., INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Aug 11, 1950 | Revoked |