| WTB Management, LLC, Delinquent September 1, 2023Location not reported, CO · Delinquent | Location not reported, CO | LLC | Jul 25, 2011 | Delinquent |
| ANESTHESIA ASSOCIATES OF WILLIMANTIC, P.C.Willimantic, CT · Active | Willimantic, CT | Corporation | Oct 2, 1972 | Active |
| BRAND TRAVEL AGENCY, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Dec 6, 1976 | Dissolved |
| BUILDER'S CONCRETE OF WINDHAM, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | May 2, 1950 | Dissolved |
| CAPITOL GARAGE, INCORPORATEDWillimantic, CT · Active | Willimantic, CT | Corporation | Aug 23, 1934 | Active |
| CHRONICLE PRINTING COMPANY THEWillimantic, CT · Dissolved | Willimantic, CT | Corporation | Apr 14, 1887 | Dissolved |
| POTPOURRI ENTERPRISES, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Jul 6, 1964 | Dissolved |
| DILIAPES RESTAURANT, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Jan 12, 1977 | Active |
| LEO J. SANTUCCI, O.D., P.C.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Apr 30, 1976 | Dissolved |
| SURGICAL ASSOCIATES OF WINDHAM, P.C.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Dec 30, 1970 | Dissolved |
| HOOT, INC. THEWillimantic, CT · Active | Willimantic, CT | Corporation | Jan 8, 1975 | Active |
| NORTHEAST RECYCLERS OF WINDHAM, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Feb 6, 1967 | Active |
| HOSMER MOUNTAIN BOTTLING CO., INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Oct 1, 1963 | Active |
| J.S. NASIN COMPANYWillimantic, CT · Dissolved | Willimantic, CT | Corporation | Apr 1, 1971 | Dissolved |
| WINDHAM MEDICAL GROUP, P.C.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | May 5, 1977 | Dissolved |
| MACKEY'S, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Oct 22, 1970 | Active |
| MANSFIELD CVS, INC.Willimantic, CT · Merged | Willimantic, CT | Corporation | Sep 8, 1969 | Merged |
| MOULTON REALTY CORPORATION THEWillimantic, CT · Dissolved | Willimantic, CT | Corporation | Feb 18, 1969 | Dissolved |
| O. L. WILLARD COMPANY, THEWillimantic, CT · Active | Willimantic, CT | Corporation | May 27, 1927 | Active |
| P. AND J. SPRINKLER CO., INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | May 8, 1972 | Dissolved |
| PAPAS' ROAST BEEF, INC.Willmntc, CT · Forfeited | Willmntc, CT | Corporation | Aug 4, 1970 | Forfeited |
| PARK CENTRAL HOTEL, INC.Williamtic, CT · Dissolved | Williamtic, CT | Corporation | May 29, 1969 | Dissolved |
| ZIANO, INC.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | Sep 1, 1964 | Forfeited |
| PATHOLOGY ASSOCIATES OF WINDHAM, P.C.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Feb 1, 1973 | Dissolved |
| RIDGES MANUFACTURERS OUTLET, INCORPORATED, THEWillimantic, CT · Forfeited | Willimantic, CT | Corporation | Jan 24, 1955 | Forfeited |
| SUPERIOR ELECTRONICS, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Nov 22, 1963 | Dissolved |
| TOWNE ENGINEERING, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Apr 2, 1976 | Active |
| WILLIMANTIC WASTE PAPER CO., INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Apr 4, 1977 | Active |
| WINDHAM SURGICAL GROUP, P.C. THEWillimantic, CT · Dissolved | Willimantic, CT | Corporation | Aug 1, 1969 | Dissolved |
| ECSU FOUNDATION, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Mar 31, 1971 | Active |
| WILLIMANTIC LODGE NO. 1311 BENEVOLENT AND PROTECTIVE ORDER OF ELKS OF THE UNITED STATES OF AMERICA,Willimantic, CT · Active | Willimantic, CT | Corporation | Mar 1, 1918 | Active |
| CARD HOME FOR THE AGED INCORPORATEDWillimantic, CT · Active | Willimantic, CT | Corporation | Jan 26, 1915 | Active |
| EASTERN CONNECTICUT LIBRARIES, INCORPORATEDWillimantic, CT · Merged | Willimantic, CT | Corporation | Mar 10, 1976 | Merged |
| EASTERN CONNECTICUT STATE UNIVERSITY ALUMNI ASSOCIATION, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Oct 13, 1967 | Dissolved |
| EASTERN CONNECTICUT TRAINING SCHOOL FOR FIREMEN, INCORPORATED, THEWillimantic, CT · Active | Willimantic, CT | Corporation | Jun 14, 1954 | Active |
| FRIENDS OF PERCEPTION PROGRAMS, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Jan 9, 1975 | Dissolved |
| FOUNDATION FOR CAMPUS MINISTRY, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Dec 11, 1972 | Active |
| WELLSWOOD ESTATES FOUNDATION, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Apr 21, 1972 | Active |
| GOLD STAR POST NO 1724, VETERANS OF FOREIGN WARS, INCORPORATEDWillimantic, CT · Active | Willimantic, CT | Corporation | Jun 17, 1947 | Active |
| HATCH HOSPITAL CORPORATION, THEWillimantic, CT · Dissolved | Willimantic, CT | Corporation | Nov 6, 1964 | Dissolved |
| COMMUNITY PREVENTION AND ADDICTION SERVICES, INC.Willimantic, CT · Merged | Willimantic, CT | Corporation | May 4, 1976 | Merged |
| POLICEMEN'S BENEVOLENT ASSOCIATION OF WILLIMANTIC, INCORPORATED, THEWillimantic, CT · Active | Willimantic, CT | Corporation | Jan 19, 1953 | Active |
| PUERTO RICAN ORGANIZATION PROGRAM, INC. THEWillimantic, CT · Forfeited | Willimantic, CT | Corporation | Oct 24, 1972 | Forfeited |
| RUSSIAN ORTHODOX LAYMEN'S LEAGUE, INCORPORATED, THEWillimantic, CT · Forfeited | Willimantic, CT | Corporation | Oct 7, 1957 | Forfeited |
| WINDHAM COUNTY SHERIFFS ASSOCIATION, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Oct 8, 1975 | Dissolved |
| WINDHAM MILLS DEVELOPMENT CORPORATIONWillimantic, CT · Active | Willimantic, CT | Corporation | Jun 9, 1972 | Active |
| TRI-COUNTY FIRE POLICE ASSOCIATION, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Mar 8, 1963 | Active |
| WILLIMANTIC FOOD CO-OP, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Feb 13, 1976 | Active |
| WILLIMANTIC CAMP MEETING ASSOCIATION, INCORPORATED THEWillimantic, CT · Active | Willimantic, CT | Corporation | Apr 1, 1946 | Active |
| WILLIMANTIC LITTLE LEAGUE, INCWillimantic, CT · Active | Willimantic, CT | Corporation | Mar 27, 1968 | Active |