| WINDHAM YOUTH FOOTBALL AND CHEERLEADING, INC.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | Oct 28, 1957 | Forfeited |
| ACCESS AGENCY, INC. THEWillimantic, CT · Active | Willimantic, CT | Corporation | Apr 1, 1965 | Active |
| WINDHAM HISTORICAL SOCIETY, INCORPORATED, THEWillimantic, CT · Active | Willimantic, CT | Corporation | Dec 22, 1965 | Active |
| WINDHAM REGIONAL COMMUNITY COUNCIL, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Apr 26, 1974 | Active |
| AUXILIARY TO THE WINDHAM COMMUNITY MEMORIAL HOSPITAL, INCORPORATED THEWillimantic, CT · Dissolved | Willimantic, CT | Corporation | Jun 17, 1957 | Dissolved |
| PERCEPTION PROGRAMS, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Oct 13, 1970 | Active |
| WINDHAM REGION UNITED WAY, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Oct 23, 1950 | Dissolved |
| WINDHAM WILLIMANTIC CHILD CARE & FAMILY DEVELOPMENT PROGRAMS, INC.Willimantic, CT · Merged | Willimantic, CT | Corporation | Jul 22, 1971 | Merged |
| GARY L. BERMAN, D.M.D., P.C.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Dec 1, 1977 | Dissolved |
| G.B.H. CORPORATIONWillimantic, CT · Dissolved | Willimantic, CT | Corporation | Jan 17, 1978 | Dissolved |
| WINDHAM EYE GROUP, P.C.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Apr 5, 1978 | Dissolved |
| IVES BROTHERS, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Apr 18, 1978 | Active |
| WILLIMANTIC MEN'S ATHLETIC CLUB, INC.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | May 19, 1978 | Forfeited |
| WILLIAM R. NEAL, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Jul 17, 1978 | Dissolved |
| THE RETAIL CONSULTING GROUP, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Aug 4, 1978 | Dissolved |
| LANE & ROSEN, P.C.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Jul 1, 1971 | Dissolved |
| WILLIAM J. ELLZEY, M.D., P.C.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | Nov 29, 1978 | Forfeited |
| GEM CHEVROLET, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Sep 10, 1931 | Active |
| W. F. LEBEAU PLUMBING AND HEATING, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Dec 20, 1978 | Dissolved |
| WILLIMANTIC SWITCHBOARD FIRE CHIEFS ASSOCIATION INCORPORATED THEWillimantic, CT · Active | Willimantic, CT | Corporation | Apr 8, 1958 | Active |
| NASSIFF'S FOR SPORTS, INC.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | Jan 16, 1979 | Forfeited |
| NUTMEG BROADCASTING COMPANY THEWillimantic, CT · Dissolved | Willimantic, CT | Corporation | Sep 21, 1960 | Dissolved |
| PULASKI AMERICAN CITIZENS CLUB, INCORPORATED THEWillimantic, CT · Dissolved | Willimantic, CT | Corporation | May 13, 1912 | Dissolved |
| WINDHAM COMMUNITY MEMORIAL HOSPITAL, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Mar 11, 1908 | Active |
| CHAMBER OF COMMERCE, INC. THEWillimantic, CT · Active | Willimantic, CT | Corporation | Aug 28, 1912 | Active |
| ROTTINO, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Oct 25, 1976 | Dissolved |
| CONNECTICUT ORTHOPAEDIC AND HAND SURGERY CENTER, P.C.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | Apr 10, 1980 | Forfeited |
| NORTHEAST COMMUNITY HOUSING CORPORATIONWillimantic, CT · Active | Willimantic, CT | Corporation | May 2, 1980 | Active |
| WOMEN'S SOFTBALL ASSOCIATION OF GREATER WILLIMANTIC, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | May 8, 1980 | Active |
| BESTWAY FREIGHT LINES LTD.Willimantic, CT · Active | Willimantic, CT | Corporation | Jun 20, 1980 | Active |
| INHEALTH MED CT, P.C.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | Jun 27, 1980 | Forfeited |
| SEXUAL ASSAULT CRISIS CENTER OF EASTERN CONNECTICUT, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Sep 17, 1980 | Active |
| GINGRAS SHOE SALON, INC.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | Mar 17, 1981 | Forfeited |
| WONG'S, INC.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | Apr 21, 1981 | Forfeited |
| WILLIMANTIC DONUTS, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | May 26, 1981 | Active |
| SPECTOR ENTERPRISES LTD.Willimantic, CT · Active | Willimantic, CT | Corporation | Jun 1, 1981 | Active |
| WINDHAM HIGH SCHOOL BOOSTER CLUB, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Oct 13, 1981 | Active |
| TRAVERNAS, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | May 27, 1983 | Active |
| WINDHAM PROFESSIONAL OFFICE CONDOMINIUM ASSOCIATION, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Jun 16, 1983 | Active |
| THE PRUE LAW GROUP, P.C.Willimantic, CT · Active | Willimantic, CT | Corporation | Jun 17, 1983 | Active |
| ARTS IN MOTION, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Nov 16, 1983 | Dissolved |
| BENDORA SHOES, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Nov 21, 1983 | Dissolved |
| PROFESSIONAL LOCK COMPANYWillimantic, CT · Active | Willimantic, CT | Corporation | Mar 21, 1984 | Active |
| B & S INC.Willimantic, CT · Active | Willimantic, CT | Corporation | May 10, 1984 | Active |
| NUTRITION COUNSELING CENTER, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | May 21, 1984 | Dissolved |
| WINDHAM AREA INTERFAITH MINISTRY, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Aug 3, 1984 | Active |
| GREYWOLF TECHNOLOGIES, INC.Willimantic, CT · Dissolved | Willimantic, CT | Corporation | Nov 19, 1984 | Dissolved |
| VIDEO GALAXY VII, INC.Willimantic, CT · Forfeited | Willimantic, CT | Corporation | Dec 7, 1984 | Forfeited |
| PARA-PHARM, INC.Willimantic, CT · Active | Willimantic, CT | Corporation | Jan 4, 1985 | Active |
| LIBS INCORPORATEDWillimantic, CT · Forfeited | Willimantic, CT | Corporation | Mar 12, 1985 | Forfeited |