| SUNSHINE LAUNDRY COMPANY, THENewington, CT · Active | Newington, CT | Corporation | Apr 1, 1916 | Active |
| TLB CORP.Newington, CT · Dissolved | Newington, CT | Corporation | Jan 10, 1975 | Dissolved |
| 3 SONS, INCORPORATEDNewington, CT · Dissolved | Newington, CT | Corporation | Jul 1, 1959 | Dissolved |
| TIMWOOD HOMES, LTD.Newington, CT · Dissolved | Newington, CT | Corporation | Apr 5, 1972 | Dissolved |
| TRANS-BERLIN CORP.Newington, CT · Active | Newington, CT | Corporation | May 15, 1945 | Active |
| TURNPIKE MOTORS, INC.Newington, CT · Active | Newington, CT | Corporation | Mar 7, 1972 | Active |
| UNITED CORPORATE SERVICES, INC.Newington, CT · Active | Newington, CT | Corporation | Oct 7, 1975 | Active |
| WEST HARTFORD TOOL & DIE CO., INCORPORATEDNewington, CT · Active | Newington, CT | Corporation | Oct 24, 1949 | Active |
| WHITNEY TOOL & SUPPLY COMPANY, INC.Newington, CT · Active | Newington, CT | Corporation | May 6, 1960 | Active |
| WORLD OF NUTRITION, INCORPORATEDNewington, CT · Active | Newington, CT | Corporation | Apr 29, 1971 | Active |
| ARRL FOUNDATION, INC., THENewington, CT · Active | Newington, CT | Corporation | Sep 25, 1973 | Active |
| LEONARD M. TROUB FOUNDATION, INC.Newington, CT · Dissolved | Newington, CT | Corporation | Oct 5, 1955 | Dissolved |
| INDIAN HILL COUNTRY CLUB, INC.Newington, CT · Active | Newington, CT | Corporation | Nov 15, 1968 | Active |
| INTERFAITH HOUSING, INC.Newington, CT · Dissolved | Newington, CT | Corporation | Jun 18, 1965 | Dissolved |
| JEWISH WAR VETERANS OF THE UNITED STATES, DEPARTMENT OF CONNECTICUT, INCORPORATEDNewington, CT · Forfeited | Newington, CT | Corporation | Jun 19, 1945 | Forfeited |
| JUNIOR WOMAN'S CLUB OF NEWINGTON, INC., THENewington, CT · Dissolved | Newington, CT | Corporation | Apr 28, 1965 | Dissolved |
| LAPIDARY AND MINERAL SOCIETY OF CENTRAL CONNECTICUT, INC.Newington, CT · Active | Newington, CT | Corporation | May 5, 1975 | Active |
| LUCY ROBBINS WELLES LIBRARY, INCORPORATEDNewington, CT · Active | Newington, CT | Corporation | Aug 16, 1939 | Active |
| MAY-DAVIS-STOTZER POST #117 AMERICAN LEGION DEP'T OF CONNECTICUT, INCORPORATEDNewington, CT · Active | Newington, CT | Corporation | Nov 26, 1934 | Active |
| MOUNTAIN LAUREL SKIERS, INCORPORATED THENewington, CT · Active | Newington, CT | Corporation | Dec 9, 1947 | Active |
| NEWINGTON AREA CHAPTER #697 OF AARP, INC.Newington, CT · Dissolved | Newington, CT | Corporation | Jul 2, 1970 | Dissolved |
| NEWINGTON CHAMBER OF COMMERCE, INC.Newington, CT · Active | Newington, CT | Corporation | Jun 20, 1967 | Active |
| NEWINGTON CHAPTER OF UNICO NATIONAL, INCORPORATEDNewington, CT · Forfeited | Newington, CT | Corporation | Mar 29, 1973 | Forfeited |
| NEWINGTON COOPERATIVE NURSERY SCHOOL, INC.Newington, CT · Forfeited | Newington, CT | Corporation | Sep 4, 1959 | Forfeited |
| NEWINGTON ELEMENTARY CHILDREN'S CENTER, INC.Newington, CT · Active | Newington, CT | Corporation | May 14, 1976 | Active |
| THE NEWINGTON LITTLE LEAGUE, INCORPORATEDNewington, CT · Active | Newington, CT | Corporation | Apr 14, 1950 | Active |
| NEWINGTON STUDENT ASSISTANCE FUND, INC.Newington, CT · Active | Newington, CT | Corporation | Oct 19, 1966 | Active |
| NEWINGTON EMERGENCY MEDICAL SERVICES, INC.Newington, CT · Active | Newington, CT | Corporation | May 17, 1968 | Active |
| POLISH AMERICAN CLUB OF NEWINGTON, INCORPORATED, THENewington, CT · Active | Newington, CT | Corporation | Jun 2, 1972 | Active |
| POLONIA-PADEREWSKI CHORUS, INC.Newington, CT · Active | Newington, CT | Corporation | Dec 22, 1964 | Active |
| SENSE INC.Newington, CT · Forfeited | Newington, CT | Corporation | Dec 13, 1976 | Forfeited |
| SARAH WHITMAN HOOKER CHAPTER OF THE DAUGHTERS OF THE AMERICAN REVOLUTION INCORPORATEDNewington, CT · Active | Newington, CT | Corporation | Dec 23, 1909 | Active |
| SEQUIN BUILDING ASSOCIATION OF NEWINGTON, CONNECTICUT, INC.Newington, CT · Active | Newington, CT | Corporation | Sep 19, 1955 | Active |
| SEVEN CITIES CONDOMINIUM ASSOCIATION, INC.Newington, CT · Active | Newington, CT | Corporation | May 4, 1972 | Active |
| SHRINERS' OASIS INCORPORATED, THENewington, CT · Dissolved | Newington, CT | Corporation | Aug 31, 1908 | Dissolved |
| SOUTHFIELD CHILDREN'S CENTER, INC.Newington, CT · Active | Newington, CT | Corporation | Mar 27, 1974 | Active |
| THEATRE NEWINGTON, INCORPORATEDNewington, CT · Forfeited | Newington, CT | Corporation | Jun 25, 1976 | Forfeited |
| WETHERSFIELD COVE YACHT CLUB INCORPORATEDNewington, CT · Active | Newington, CT | Corporation | May 25, 1911 | Active |
| WOMAN'S CLUB OF NEWINGTON, INC., THENewington, CT · Dissolved | Newington, CT | Corporation | Apr 7, 1969 | Dissolved |
| 171 PASCONE PLACE CORPORATIONNewington, CT · Dissolved | Newington, CT | Corporation | Nov 3, 1977 | Dissolved |
| CONNECTICUT RECREATION AND PARKS ASSOCIATION, INC.Newington, CT · Active | Newington, CT | Corporation | Feb 3, 1978 | Active |
| CUSTOMS & CLASSICS OF CONNECTICUT, INC.Newington, CT · Active | Newington, CT | Corporation | Mar 28, 1978 | Active |
| ALEXANDER J. FORTIER M.D., P.C.Newington, CT · Dissolved | Newington, CT | Corporation | Nov 1, 1977 | Dissolved |
| RON'S AUTO SERVICE, INC.Newington, CT · Forfeited | Newington, CT | Corporation | Jun 30, 1978 | Forfeited |
| FISETTE, BATZNER FUNERAL HOME, INC.Newington, CT · Dissolved | Newington, CT | Corporation | Apr 18, 1958 | Dissolved |
| FULCO, DITOMMASO, MCMAHON & CO., P.C.Newington, CT · Active | Newington, CT | Corporation | Aug 30, 1978 | Active |
| CENTRAL CONNECTICUT SALES AND MANUFACTURING, INC.Newington, CT · Active | Newington, CT | Corporation | Sep 7, 1978 | Active |
| APAULO CORPORATIONNewington, CT · Forfeited | Newington, CT | Corporation | Aug 15, 1977 | Forfeited |
| BEACON INDUSTRIES, INC.Newington, CT · Active | Newington, CT | Corporation | May 17, 1948 | Active |
| BALF CO., THENewington, CT · Active | Newington, CT | Corporation | Apr 10, 1897 | Active |