| HATFIELD INSURANCE AGENCY INCORPORATEDFairfield, CT · Active | Fairfield, CT | Corporation | May 24, 1929 | Active |
| HENRY C. REID & SON, INC.Fairfield, CT · Active | Fairfield, CT | Corporation | Mar 4, 1964 | Active |
| HENRY AND GERETY, INCORPORATEDFairfield, CT · Active | Fairfield, CT | Corporation | Jun 27, 1947 | Active |
| Gastroenterology Associates of Fairfield County, LLCFairfield, CT · Active | Fairfield, CT | LLC | May 6, 2026 | Active |
| JOHN S. LESKO AND SON, INCORPORATEDFairfield, CT · Active | Fairfield, CT | Corporation | Aug 16, 1948 | Active |
| JOLEN CREME BLEACH CORP.Fairfield, CT · Active | Fairfield, CT | Corporation | May 28, 1964 | Active |
| JOLEN, INC.Fairfield, CT · Active | Fairfield, CT | Corporation | May 28, 1964 | Active |
| JOLEN SALES CORP.Fairfield, CT · Active | Fairfield, CT | Corporation | May 28, 1964 | Active |
| JSKJ INCORPORATEDFairfield, CT · Dissolved | Fairfield, CT | Corporation | Apr 6, 1940 | Dissolved |
| KEN-MONT AND KEN-WOOD, LLCFairfield, CT · Active | Fairfield, CT | LLC | Dec 18, 2023 | Active |
| LAUTERBACH, INC.Fairfield, CT · Active | Fairfield, CT | Corporation | Aug 13, 1964 | Active |
| LESSER & LIEBERTHAL, P.C.Fairfield, CT · Forfeited | Fairfield, CT | Corporation | Dec 4, 1974 | Forfeited |
| MARITRONICS COMPANY, INCORPORATEDFairfield, CT · Forfeited | Fairfield, CT | Corporation | Mar 9, 1970 | Forfeited |
| MAS OYAMA KARATE, INC.Fairfield, CT · Forfeited | Fairfield, CT | Corporation | Feb 20, 1974 | Forfeited |
| MELVIN P. COOLIDGE, M.D., P.C.Fairfield, CT · Dissolved | Fairfield, CT | Corporation | Jun 24, 1970 | Dissolved |
| MERCURIO BROTHERS, INCORPORATEDFairfield, CT · Active | Fairfield, CT | Corporation | Sep 25, 1953 | Active |
| MIDAS TOUCH, INC. THEFairfield, CT · Forfeited | Fairfield, CT | Corporation | Sep 2, 1976 | Forfeited |
| MOHICAN VALLEY CONCRETE CORPORATION THEFairfield, CT · Active | Fairfield, CT | Corporation | Aug 16, 1956 | Active |
| MOHICAN VALLEY SAND AND GRAVEL CORPORATION, THEFairfield, CT · Dissolved | Fairfield, CT | Corporation | Jun 25, 1958 | Dissolved |
| NORWEST MARINE, INCORPORATEDFairfield, CT · Active | Fairfield, CT | Corporation | Dec 26, 1975 | Active |
| OSCAR'S, INC.Fairfield, CT · Forfeited | Fairfield, CT | Corporation | Oct 23, 1974 | Forfeited |
| PARK CITY MEMORIAL FUNERAL HOME, INCORPORATEDFairfield, CT · Active | Fairfield, CT | Corporation | Sep 29, 1949 | Active |
| PEQUOT PUBLISHING, INC.Fairfield, CT · Active | Fairfield, CT | Corporation | Nov 18, 1971 | Active |
| PEQUOT TRAVEL LTD.Fairfield, CT · Forfeited | Fairfield, CT | Corporation | Sep 25, 1972 | Forfeited |
| COSMETIC AND RECONSTRUCTIVE DENTISTRY ASSOCIATES, P.C.Fairfield, CT · Active | Fairfield, CT | Corporation | Oct 5, 1972 | Active |
| PLANT FACTORY, INC. THEFairfield, CT · Active | Fairfield, CT | Corporation | Nov 26, 1976 | Active |
| POST-BENSON CORPORATIONFairfield, CT · Active | Fairfield, CT | Corporation | Mar 10, 1955 | Active |
| RAY FLANAGAN INCORPORATEDFairfield, CT · Active | Fairfield, CT | Corporation | Jun 13, 1958 | Active |
| RESPIRATORY ASSOCIATES, P.C.Fairfield, CT · Active | Fairfield, CT | Corporation | Jul 2, 1971 | Active |
| RICKARD REALTY CORPORATIONFairfield, CT · Dissolved | Fairfield, CT | Corporation | Jul 12, 1973 | Dissolved |
| DEMARTIN DENTAL ASSOCIATES, P.C.Fairfield, CT · Active | Fairfield, CT | Corporation | Aug 25, 1970 | Active |
| S & L HOMES, INC.Fairfield, CT · Dissolved | Fairfield, CT | Corporation | May 19, 1977 | Dissolved |
| SPADONE PROPERTY HOLDING CORPORATIONFairfield, CT · Dissolved | Fairfield, CT | Corporation | Dec 30, 1976 | Dissolved |
| SWAN ENGRAVING COMPANY, THEFairfield, CT · Dissolved | Fairfield, CT | Corporation | Apr 17, 1925 | Dissolved |
| TOLL GATE FOODS, INC.Fairfield, CT · Dissolved | Fairfield, CT | Corporation | Nov 14, 1958 | Dissolved |
| TRES BON, LTD.Fairfield, CT · Dissolved | Fairfield, CT | Corporation | May 11, 1970 | Dissolved |
| 2055 BLACK ROCK TURNPIKE CORPORATION, THEFairfield, CT · Active | Fairfield, CT | Corporation | Jan 26, 1956 | Active |
| CALMARE THERAPEUTICS INCORPORATEDFairfield, CT · Revoked | Fairfield, CT | Corporation | Dec 9, 1974 | Revoked |
| VON KOHORN & ASSOCIATES, INC.Fairfield, CT · Dissolved | Fairfield, CT | Corporation | Sep 30, 1975 | Dissolved |
| WESTCHESTER SHOPPING CENTER, INC.Fairfield, CT · Active | Fairfield, CT | Corporation | Feb 17, 1969 | Active |
| YANKEE ELECTRIC CONSTRUCTION COMPANY, INC.Fairfield, CT · Active | Fairfield, CT | Corporation | Oct 4, 1976 | Active |
| YANKEE LUMBER, INC.Fairfield, CT · Dissolved | Fairfield, CT | Corporation | Dec 23, 1974 | Dissolved |
| OAK LAWN CEMETERY ASSOCIATION, INC.Fairfield, CT · Active | Fairfield, CT | Corporation | Jan 25, 1866 | Active |
| OLD POST ROAD AREA ASSOCIATION, INCORPORATED THEFairfield, CT · Active | Fairfield, CT | Corporation | Jul 28, 1977 | Active |
| CONNECTICUT AUDUBON SOCIETY, INC. THEFairfield, CT · Active | Fairfield, CT | Corporation | Jun 20, 1914 | Active |
| COUNTRY CLUB OF FAIRFIELD INCORPORATEDFairfield, CT · Active | Fairfield, CT | Corporation | Feb 28, 1914 | Active |
| EMERGENCY FUND FOR VETERANS OF WORLD WAR II INCORPORATED THEFairfield, CT · Forfeited | Fairfield, CT | Corporation | Oct 30, 1958 | Forfeited |
| EUNICE DENNIE BURR CHAPTER OF THE DAUGHTERS OF THE AMERICAN REVOLUTION INCORPORATEDFairfield, CT · Active | Fairfield, CT | Corporation | Jul 14, 1925 | Active |
| FAIR ACRES ASSOCIATION, INCORPORATED, THEFairfield, CT · Active | Fairfield, CT | Corporation | Sep 21, 1955 | Active |
| THE FAIRFIELD BEACH CLUB, INC.Fairfield, CT · Active | Fairfield, CT | Corporation | Mar 4, 1946 | Active |