| RAYCO METAL FINISHING, INC.Middletown, CT · Active | Middletown, CT | Corporation | Aug 21, 1973 | Active |
| BRAINARD AGENCY INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Dec 29, 1944 | Dissolved |
| RYAN ENTERPRISES, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Sep 29, 1975 | Dissolved |
| S.G. ENTERPRISES, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Jun 9, 1975 | Dissolved |
| SGM OPERATIONS CORPORATIONMiddletown, CT · Dissolved | Middletown, CT | Corporation | Feb 21, 1956 | Dissolved |
| SHAW BELTING COMPANY, THEMiddletown, CT · Dissolved | Middletown, CT | Corporation | Oct 26, 1942 | Dissolved |
| W. F. SHUCK PETROLEUM CO.Middletown, CT · Forfeited | Middletown, CT | Corporation | Dec 1, 1975 | Forfeited |
| SMITH & BISHEL COMPANY, THEMiddletown, CT · Active | Middletown, CT | Corporation | Feb 6, 1906 | Active |
| STIELAU OIL COMPANY THEMiddletown, CT · Active | Middletown, CT | Corporation | Jun 4, 1958 | Active |
| SUNSHINE DAIRY, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Feb 18, 1963 | Dissolved |
| THOMAS P. LAMBE M. D., P. C.Middletown, CT · Dissolved | Middletown, CT | Corporation | Sep 25, 1974 | Dissolved |
| TINNY CORPORATION THEMiddletown, CT · Active | Middletown, CT | Corporation | Jun 18, 1971 | Active |
| TRAVELS, INC.Middletown, CT · Forfeited | Middletown, CT | Corporation | Nov 12, 1963 | Forfeited |
| ROOK ENTERPRISES, INC.Middletown, CT · Active | Middletown, CT | Corporation | Jun 23, 1977 | Active |
| SEBETHE RIVER REAL ESTATE DEVELOPMENT COMPANYMiddletown, CT · Active | Middletown, CT | Corporation | Aug 25, 1955 | Active |
| WAREHOUSE POINT MASONIC HALL CORPORATIONMiddletown, CT · Dissolved | Middletown, CT | Corporation | Feb 27, 1920 | Dissolved |
| WYREPAK INDUSTRIES, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Sep 24, 1958 | Dissolved |
| ALTRUSA INTERNATIONAL OF CENTRAL CONNECTICUT, INC.Middletown, CT · Active | Middletown, CT | Corporation | Sep 27, 1974 | Active |
| MERIDEN MOTORCYLCE CLUB, INCORPORATED, THEMiddletown, CT · Active | Middletown, CT | Corporation | Oct 2, 1934 | Active |
| CONNECTICUT RIVER COASTAL CONSERVATION DISTRICT, INC.Middletown, CT · Active | Middletown, CT | Corporation | Dec 23, 1964 | Active |
| ASSOCIATED TEACHERS OF MATHEMATICS IN CONNECTICUT INC.Middletown, CT · Forfeited | Middletown, CT | Corporation | May 4, 1973 | Forfeited |
| CONN. EMPLOYEE UNION "INDEPENDENT" INC.Middletown, CT · Active | Middletown, CT | Corporation | Apr 19, 1967 | Active |
| CONNECTICUT HUMANITIES COUNCIL, INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | Nov 14, 1974 | Active |
| CONNECTICUT MUSIC EDUCATORS ASSOCIATION, INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | Mar 30, 1948 | Active |
| CONNECTICUT RADIO FELLOWSHIP, INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | Dec 20, 1962 | Active |
| CONNECTICUT TROOPERS MEMORIAL SCHOLARSHIP FUND, INCORPORATED, THEMiddletown, CT · Active | Middletown, CT | Corporation | Jun 22, 1962 | Active |
| CONNECTION, INC., THEMiddletown, CT · Active | Middletown, CT | Corporation | Feb 28, 1972 | Active |
| EXCHANGE CLUB OF MIDDLETOWN, CONN., INC., THEMiddletown, CT · Forfeited | Middletown, CT | Corporation | Apr 14, 1958 | Forfeited |
| FARMS AT WESTLAKE ASSOCIATION, INC. THEMiddletown, CT · Active | Middletown, CT | Corporation | Jan 9, 1973 | Active |
| FIELDBROOK ASSOCIATION, INC.Middletown, CT · Active | Middletown, CT | Corporation | May 2, 1975 | Active |
| FOREST CITY HOME CORPORATION, THEMiddletown, CT · Dissolved | Middletown, CT | Corporation | Feb 19, 1960 | Dissolved |
| KIWANIS FOUNDATION OF MIDDLETOWN, INC., THEMiddletown, CT · Active | Middletown, CT | Corporation | Jan 22, 1968 | Active |
| GILEAD COMMUNITY SERVICES, INC.Middletown, CT · Active | Middletown, CT | Corporation | May 27, 1968 | Active |
| GODFREY MEMORIAL LIBRARY, INCORPORATED THEMiddletown, CT · Active | Middletown, CT | Corporation | Nov 28, 1947 | Active |
| CONNECTICUT CONVENTION & SPORTS BUREAU, INC.Middletown, CT · Active | Middletown, CT | Corporation | Aug 2, 1974 | Active |
| HIGGANUM GRANGE NO. 124, PATRONS OF HUSBANDRY, INCORPORATED, THEMiddletown, CT · Dissolved | Middletown, CT | Corporation | May 20, 1952 | Dissolved |
| INSTITUTE FOR EVOLUTIONARY PSYCHOLOGY, INCORPORATED, THEMiddletown, CT · Forfeited | Middletown, CT | Corporation | Sep 12, 1950 | Forfeited |
| THE JUNIOR WOMEN'S CLUB OF MIDDLETOWN, INC.Middletown, CT · Dissolved | Middletown, CT | Corporation | Dec 18, 1967 | Dissolved |
| KIWANIS CLUB OF MIDDLETOWN, CONNECTICUT, INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | Dec 8, 1952 | Active |
| LINUS BALDWIN PARK ASSOCIATION, INC.Middletown, CT · Active | Middletown, CT | Corporation | May 22, 1963 | Active |
| CONNECTICUT ASSOCIATION FOR COMMUNITY ACTION, INC.Middletown, CT · Active | Middletown, CT | Corporation | Nov 19, 1974 | Active |
| MERCY-XAVIER FUND CORPORATIONMiddletown, CT · Active | Middletown, CT | Corporation | Mar 20, 1974 | Active |
| MATTABESECK AUDUBON SOCIETY, INC.Middletown, CT · Active | Middletown, CT | Corporation | Jul 19, 1974 | Active |
| MATABASSET GRANGE #42 BUILDING ASSOCIATION, INCORPORATED, THEMiddletown, CT · Forfeited | Middletown, CT | Corporation | Nov 3, 1931 | Forfeited |
| MERCY HIGH SCHOOL CORPORATIONMiddletown, CT · Active | Middletown, CT | Corporation | Sep 18, 1963 | Active |
| MIDDLESEX AREA INTERAGENCY COUNCIL, INC.Middletown, CT · Forfeited | Middletown, CT | Corporation | Oct 10, 1969 | Forfeited |
| MIDDLESEX COUNTY DENTAL SOCIETY, INC.Middletown, CT · Active | Middletown, CT | Corporation | Jan 20, 1958 | Active |
| MIDDLETOWN YOUTH BASEBALL SOFTBALL, INC.Middletown, CT · Forfeited | Middletown, CT | Corporation | Apr 21, 1958 | Forfeited |
| THE MIDDLETOWN COOPERATIVE PRESCHOOL INCORPORATEDMiddletown, CT · Active | Middletown, CT | Corporation | May 6, 1968 | Active |
| MIDDLETOWN HIGH SCHOOL ALUMNI ASSOCIATION INCORPORATED, THEMiddletown, CT · Forfeited | Middletown, CT | Corporation | Dec 9, 1938 | Forfeited |