| SHELTER ROCK REALTY COMPANY, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | May 25, 1956 | Dissolved |
| SIEGEL AGENCY INCORPORATED THEDanbury, CT · Active | Danbury, CT | Corporation | Dec 22, 1971 | Active |
| TEKNICIRCUITS, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | May 11, 1970 | Dissolved |
| CARTUS CORPORATIONDanbury, CT · Active | Danbury, CT | Corporation | Jun 29, 1976 | Active |
| TRI-STATE ARCHERY CORPORATIONDanbury, CT · Dissolved | Danbury, CT | Corporation | Dec 13, 1957 | Dissolved |
| CUNIS & GONTIN, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | May 6, 1969 | Dissolved |
| TRN CORP.Danbury, CT · Dissolved | Danbury, CT | Corporation | Jan 2, 1973 | Dissolved |
| VAL'S CAR WASH, INC.Danbury, CT · Forfeited | Danbury, CT | Corporation | Apr 26, 1968 | Forfeited |
| VANGUARD PRODUCTS CORPORATIONDanbury, CT · Active | Danbury, CT | Corporation | Nov 25, 1966 | Active |
| VENTURA LIQUIDATING CORP.Danbury, CT · Dissolved | Danbury, CT | Corporation | Apr 11, 1972 | Dissolved |
| W. P. V. OF DANBURY, INCORPORATEDDanbury, CT · Forfeited | Danbury, CT | Corporation | Mar 15, 1971 | Forfeited |
| WARREN PRESS, INC. THEDanbury, CT · Dissolved | Danbury, CT | Corporation | May 10, 1971 | Dissolved |
| WEST END POWER EQUIPMENT CO., INC.Danbury, CT · Active | Danbury, CT | Corporation | Jun 28, 1973 | Active |
| WESTON ARBORISTS, INC.Danbury, CT · Forfeited | Danbury, CT | Corporation | Apr 19, 1972 | Forfeited |
| MERSON'S POND, INC.Danbury, CT · Forfeited | Danbury, CT | Corporation | Jan 31, 1949 | Forfeited |
| XURON CORP.Danbury, CT · Merged | Danbury, CT | Corporation | Jan 29, 1975 | Merged |
| ALFRED J. SEFVERBLADE MEMORIAL SCHOLARSHIP FUND, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | Feb 27, 1967 | Dissolved |
| IMMACULATE HIGH SCHOOL, INC.Danbury, CT · Active | Danbury, CT | Corporation | Oct 1, 1963 | Active |
| AMERICAN-POLISH CITIZENS' CLUB OF DANBURY, INC., THEDanbury, CT · Forfeited | Danbury, CT | Corporation | Jul 11, 1924 | Forfeited |
| ANCIENT ORDER OF HIBERNIANS, JOHN A. GILDEA DAVISON, INC.Danbury, CT · Active | Danbury, CT | Corporation | Feb 14, 1966 | Active |
| ARK LODGE CORPORATION OF GEORGETOWNDanbury, CT · Active | Danbury, CT | Corporation | Nov 16, 1964 | Active |
| ASSOCIATION OF RELIGIOUS COMMUNITIES, INC.Danbury, CT · Active | Danbury, CT | Corporation | Aug 19, 1974 | Active |
| BEAVER-BROOK VOLUNTEER FIRE COMPANY INC.Danbury, CT · Merged | Danbury, CT | Corporation | Dec 26, 1912 | Merged |
| BEAVER STREET APARTMENTS COOPERATIVE, INC.Danbury, CT · Active | Danbury, CT | Corporation | Sep 18, 1972 | Active |
| BECKERLE & CO'S HOSE COMPANYDanbury, CT · Merged | Danbury, CT | Corporation | Jun 20, 1886 | Merged |
| BETHEL FISH AND GAME ASSOCIATION INCDanbury, CT · Active | Danbury, CT | Corporation | Feb 13, 1975 | Active |
| BROOKFIELD HILLS CONDOMINIUM UNIT OWNERS ASSOCIATION, INC.Danbury, CT · Active | Danbury, CT | Corporation | Feb 7, 1977 | Active |
| BROOKFIELD OFFICE PARK ASSOCIATION, INC.Danbury, CT · Active | Danbury, CT | Corporation | Sep 21, 1976 | Active |
| CITIZENS HOSE COMPANY NO.6, INCORPORATEDDanbury, CT · Merged | Danbury, CT | Corporation | Apr 20, 1915 | Merged |
| THE COMMUNITY ACTION AGENCY OF WESTERN CONNECTICUT, INC.Danbury, CT · Active | Danbury, CT | Corporation | Oct 1, 1965 | Active |
| CYRIL & MARY HANAHOE MEMORIAL CHILDREN'S CLINIC, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | Jun 2, 1975 | Dissolved |
| DANBURY YOUTH SERVICES, INC.Danbury, CT · Active | Danbury, CT | Corporation | Mar 3, 1969 | Active |
| DANBURY DRUM CORPS, INCORPORATED, THEDanbury, CT · Active | Danbury, CT | Corporation | May 16, 1938 | Active |
| DANBURY FIREMEN BENEVOLENT ASSOCIATION, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | Sep 9, 1965 | Dissolved |
| DANBURY HOSPITAL & NEW MILFORD HOSPITAL FOUNDATION, INC.Danbury, CT · Active | Danbury, CT | Corporation | Nov 27, 1974 | Active |
| DANBURY LODGE NO. 1373 LOYAL ORDER OF MOOSE, INCORPORATEDDanbury, CT · Active | Danbury, CT | Corporation | Jul 8, 1946 | Active |
| DANBURY MUNICIPAL EMPLOYEES ASSOCIATION, INC.Danbury, CT · Active | Danbury, CT | Corporation | Jan 17, 1972 | Active |
| DANBURY POLICE BENEVOLENT ASSOCIATION, INCORPORATED THEDanbury, CT · Active | Danbury, CT | Corporation | May 10, 1945 | Active |
| Catholic War Veterans of The USA Inc. Post 1042Danbury, CT · Active | Danbury, CT | Corporation | Nov 14, 1955 | Active |
| DANBURY SKI CLUB, INC.Danbury, CT · Active | Danbury, CT | Corporation | Nov 21, 1958 | Active |
| WESTERN CONNECTICUT HOME CARE, INC.Danbury, CT · Active | Danbury, CT | Corporation | Mar 7, 1940 | Active |
| DANBURY WAR MEMORIAL ASSOCIATION,INCORPORATED THEDanbury, CT · Active | Danbury, CT | Corporation | Sep 11, 1945 | Active |
| DEER HILL ARMS CONDOMINIUM ASSOCIATION, INC.Danbury, CT · Active | Danbury, CT | Corporation | Mar 31, 1975 | Active |
| FAIRFIELD COUNTY POMONA GRANGE NO. 9 PATRONS OF HUSBANDRY, INCORPORATED THEDanbury, CT · Dissolved | Danbury, CT | Corporation | Jun 26, 1956 | Dissolved |
| FAMILY AND CHILDREN'S AID, INC.Danbury, CT · Active | Danbury, CT | Corporation | Nov 14, 1972 | Active |
| GERMANTOWN VOLUNTEER HOSE COMPANYDanbury, CT · Merged | Danbury, CT | Corporation | Oct 2, 1912 | Merged |
| WESTERN CONNECTICUT STATE UNIVERSITY FOUNDATION, INC.Danbury, CT · Active | Danbury, CT | Corporation | Apr 12, 1971 | Active |
| HOUSATONIC INDUSTRIAL DEVELOPMENT CORP.Danbury, CT · Active | Danbury, CT | Corporation | Oct 14, 1969 | Active |
| INTER-FAITH SOCIAL ACTION CORPORATIONDanbury, CT · Active | Danbury, CT | Corporation | Nov 15, 1967 | Active |
| THE JEWISH FEDERATION, INC.Danbury, CT · Dissolved | Danbury, CT | Corporation | Feb 24, 1976 | Dissolved |