| ABERTHAW CONSTRUCTION CO. | — | 0073526 | 1920-04-16 | Withdrawn | |
| AMERICAN BANK OF CONNECTICUT | — | 0282352 | 1920-01-13 | Merged | |
| AMERICAN LEGION HARRY W. CONGDON POST 11 INC. | — | 0055687 | 1920-04-28 | Active | BRIDGEPORT |
| ATLANTIC SERVICE COMPANY, INC. | — | 0003315 | 1920-04-13 | Revoked | |
| BACHRACH, INCORPORATED THE | — | 0081847 | 1920-07-03 | Revoked | NONE |
| BALD-HEAD CLUB OF AMERICA, INCORPORATED | — | 0066239 | 1920-08-20 | Active | |
| BANTAM FIRE COMPANY, INCORPORATED | — | 0051857 | 1920-12-07 | Active | BANTAM |
| BBF CORPORATION | — | 0090099 | 1920-02-25 | Dissolved | |
| BETHANY PENTECOSTAL ASSEMBLY CHURCH | — | 0191432 | 1920-02-24 | Active | |
| BLOOMFIELD FARMERS' EXCHANGE, INCORPORATED THE | — | 0280045 | 1920-06-11 | Dissolved | |
| BRIDGEPORT RIFLE CLUB INCORPORATED | — | 0052188 | 1920-06-28 | Active | STRATFORD |
| BRISTOL HOSPITAL INCORPORATED, THE | — | 0052215 | 1920-03-11 | Active | BRISTOL |
| BRISTOL NURSERIES, INCORPORATED, THE | — | 0006238 | 1920-09-03 | Revoked | NONE |
| BURNS, BROOKS & MCNEIL, INC. | — | 0082164 | 1920-06-29 | Dissolved | |
| BUSINESS AND PROFESSIONAL WOMEN'S CLUB OF HARTFORD INCORPORATED | — | 0052311 | 1920-07-30 | Dissolved | NONE |
| CANAAN FIRE COMPANY INCORPORATED | — | 0052367 | 1920-03-16 | Active | NORTH CANAAN |
| CANAAN OIL COMPANY THE | — | 0082480 | 1920-04-29 | Revoked | |
| CANAAN PINE GROVE ASSOCIATION INCORPORATED, THE | — | 0007480 | 1920-08-27 | Active | FALLS VILLAGE |
| CANTERBURY SCHOOL, INCORPORATED | — | 0052395 | 1920-03-12 | Active | NEW MILFORD |
| CARLING TECHNOLOGIES, INC. | — | 0082510 | 1920-02-16 | Active | Rosemont |
| CAROLINE ASTON CONSOLIDATED FUND, INC. | — | 0061899 | 1920-11-19 | Revoked | |
| CENTRAL CONNECTICUT COUNCIL, INCORPORATED, BOY SCOUTS OF AMERICA | — | 0124648 | 1920-05-19 | Merged | |
| CHAMBER OF COMMERCE OF EASTERN CONNECTICUT, INCORPORATED | — | 0058219 | 1920-10-01 | Active | New London |
| CHARITY CLUB, INCORPORATED | — | 0074294 | 1920-03-19 | Revoked | MERIDEN |
| CHIEPPO BUS COMPANY THE | — | 0077514 | 1920-10-19 | Dissolved | |
| CO-OPERATIVE CREDIT UNION OF NEW BRITAIN, INCORPORATED | — | 0066115 | 1920-02-21 | Active | |
| CO-OPERATIVE DAIRY COMPANY INCORPORATED | — | 0066116 | 1920-10-04 | Active | NONE |
| CONNECTICUT BEARINGS COMPANY INCORPORATED THE | — | 0010335 | 1920-02-05 | Revoked | |
| CONNECTICUT BOTANICAL SOCIETY, INCORPORATED, THE | — | 0070673 | 1920-12-03 | Active | Berlin |
| CONNECTICUT SOCIETY OF CIVIL ENGINEERS, INC. | — | 0053325 | 1920-08-24 | Revoked | |
| CONSUMERS CO-OPERATIVE LEAGUE OF THE CITY OF WATERBURY, INCORPORATED. | — | 0066114 | 1920-05-17 | Active | |
| DANBURY SAVINGS AND LOAN ASSOCIATION, INCORPORATED THE | — | 0062027 | 1920-05-21 | Dissolved | |
| DAUGHTERS OF MARY OF THE IMMACULATE CONCEPTION, INC. | — | 0112105 | 1920-01-28 | Active | |
| DERBY CASTINGS COMPANY, THE | — | 0083573 | 1920-03-19 | Revoked | |
| DRAHER MACHINE COMPANY,THE | — | 0014134 | 1920-03-09 | Active | WOLCOTT |
| DWIGHT PLACE CONGREGATIONAL CHURCH OF NEW HAVEN, CONNECTICUT | — | 0111743 | 1920-09-10 | Merged | NONE |
| ESSEX PAINT & MARINE COMPANY THE | — | 0084357 | 1920-08-21 | Revoked | |
| F.A. BARTLETT TREE EXPERT COMPANY THE | — | 0016274 | 1920-06-08 | Active | STAMFORD |
| FAIRFIELD COUNTY YOUNG MEN'S CHRISTIAN ASSOCIATION, INCORPORATED | — | 0054341 | 1920-11-22 | Dissolved | |
| FAIRFIELD LUMBER AND SUPPLY COMPANY THE | — | 0084516 | 1920-08-25 | Revoked | |
| FAIRFIELD MANAGEMENT CORPORATION THE | — | 0084523 | 1920-12-24 | Revoked | |
| FEDERAL BUILDING AND LOAN ASSOCIATION, INCORPORATED | — | 0097863 | 1920-03-26 | Merged | |
| FIRST CONGREGATIONAL CHURCH OF GUILFORD | — | 0112178 | 1920-09-20 | Active | |
| FIRST ECCLESIASTICAL SOCIETY OF MIDDLETOWN, THE | — | 0063483 | 1920-05-05 | Active | |
| FIRST EVANGELICAL LUTHERAN CHURCH OF WEST HAVEN | — | 0063494 | 1920-10-15 | Active | |
| GALES FERRY FREE PUBLIC LIBRARY, INCORPORATED | — | 0054679 | 1920-08-14 | Revoked | |
| GRANBY FARMERS' CO-OPERATIVE EXCHANGE, INCORPORATED. | — | 0066141 | 1920-04-22 | Active | |
| GREEK ORTHODOX CHURCH OF NEW HAVEN | — | 0063652 | 1920-07-13 | Active | |
| GREEK ORTHODOX COMMUNITY CHURCH OF NEW HAVEN | — | 0063653 | 1920-07-13 | Active | |
| GREENWICH KNIGHTS OF COLUMBUS HOME ASSOCIATION, INCORPORATED | — | 0055477 | 1920-08-30 | Revoked | |