| ITT COURIER TERMINAL SYSTEMS, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Apr 9, 1973 | Revoked |
| CRACKERBARREL SALES CO., INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 26, 1975 | Withdrawn |
| CRESCENT METAL PRODUCTS, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Jul 2, 1973 | Revoked |
| CROCKER EQUIPMENT LEASING INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Jul 6, 1976 | Revoked |
| CROMPTON & KNOWLES CORPORATIONStamford, CT · Revoked | Stamford, CT | Corporation | Dec 11, 1961 | Revoked |
| CROSS COUNTRY MOTOR CLUB, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Apr 23, 1973 | Active |
| CROSS PROPERTIES, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Nov 23, 1970 | Revoked |
| CROTTY BROTHERS, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 30, 1974 | Revoked |
| CRUZ CONSTRUCTION CO., INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Jun 20, 1974 | Revoked |
| RGI OLD, INC.Location not reported, CT · Forfeited | Location not reported, CT | Corporation | Feb 3, 1971 | Forfeited |
| CULLIGAN WATER COMPANY OF CONNECTICUT, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Dec 23, 1964 | Dissolved |
| WINOKUR WATER CONDITIONING, INC.South Windsor, CT · Merged | South Windsor, CT | Corporation | Dec 23, 1965 | Merged |
| CULLIGAN WATER COMPANY OF RHODE ISLAND, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | May 8, 1970 | Dissolved |
| CULLINAN ENGINEERING CO., INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Aug 5, 1971 | Revoked |
| CUNNINGHAM-LIMP COMPANYLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 10, 1962 | Revoked |
| CUSHMAN & WAKEFIELD, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Aug 4, 1971 | Active |
| CUSHMAN'S SONS, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 7, 1962 | Revoked |
| CUTLER-HAMMER, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Dec 23, 1975 | Withdrawn |
| CYPRUS MINES CORPORATIONLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Nov 2, 1967 | Withdrawn |
| D. A. STUART OIL CO., LIMITEDLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Jun 1, 1937 | Revoked |
| DGD TRADING CORPORATIONLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Jun 10, 1976 | Dissolved |
| DLJ OPTION CORP, INC.Location not reported, CT · Forfeited | Location not reported, CT | Corporation | Feb 6, 1975 | Forfeited |
| NORTHFIELD CORP. OF GREENWICH, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Oct 27, 1967 | Dissolved |
| DQ ENTERPRISES INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Mar 11, 1974 | Dissolved |
| DAIRY MART FARMS, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Nov 7, 1975 | Dissolved |
| DALTON-DALTON-NEWPORT INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 16, 1974 | Revoked |
| DAMAR CONSTRUCTION CORP.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Apr 3, 1968 | Revoked |
| DANA CORPORATION (VIRGINIA)Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jul 17, 1968 | Withdrawn |
| DANBURY CVS, INC.Danbury, CT · Merged | Danbury, CT | Corporation | Jul 3, 1972 | Merged |
| DANBURY FIDCO, INCLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Nov 8, 1976 | Dissolved |
| DANBURY IRVCO, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Nov 8, 1976 | Dissolved |
| DANBURY NEMCO, INC.Location not reported, CT · Forfeited | Location not reported, CT | Corporation | Nov 8, 1976 | Forfeited |
| DANBURY PHARMACAL, INC.Danbury, CT · Merged | Danbury, CT | Corporation | Jun 17, 1970 | Merged |
| DANBURY RIVER PROPERTIES, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Nov 20, 1967 | Dissolved |
| DANIEL CONSTRUCTION COMPANY, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Dec 14, 1970 | Withdrawn |
| DANIEL RADIATOR CORPORATIONLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Feb 4, 1976 | Withdrawn |
| D'ANNUNZIO BROS., INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Dec 13, 1972 | Revoked |
| DANRAY, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Aug 5, 1976 | Withdrawn |
| DARICO, INC.Location not reported, CT · Merged | Location not reported, CT | Corporation | May 26, 1969 | Merged |
| DARIN & ARMSTRONG, INC.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | May 29, 1968 | Withdrawn |
| DARLING INGREDIENTS INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Feb 25, 1963 | Active |
| DARMAD CORPORATIONLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jul 20, 1966 | Withdrawn |
| DART ENVIRONMENT AND SERVICES COMPANYLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Sep 9, 1975 | Revoked |
| DARYL ANN DRESS SHOPPES OF CONN., NO. 1, INC.Location not reported, CT · Forfeited | Location not reported, CT | Corporation | Jan 11, 1977 | Forfeited |
| DATA DIMENSIONS EQUIPMENT CORP.Location not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jun 10, 1971 | Withdrawn |
| NORTHERN TELECOM SYSTEMS CORPORATIONLocation not reported, CT · Revoked | Location not reported, CT | Corporation | Feb 26, 1973 | Revoked |
| DATA PATHING INCORPORATEDLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | May 22, 1968 | Withdrawn |
| DATA-PLEX SYSTEMS, INC.Location not reported, CT · Revoked | Location not reported, CT | Corporation | Apr 5, 1972 | Revoked |
| DATAPOINT CORPORATIONLocation not reported, CT · Withdrawn | Location not reported, CT | Corporation | Jan 2, 1970 | Withdrawn |
| DAVEY TREE EXPERT COMPANYLocation not reported, CT · Active | Location not reported, CT | Corporation | Apr 18, 1921 | Active |