| EVERGREEN ROAD ASSOCIATION, INCORPORATED, THEGreenwich, CT · Active | Greenwich, CT | Corporation | Feb 10, 1939 | Active |
| FIELD POINT ASSOCIATION, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Oct 17, 1973 | Active |
| CARL & DOROTHY BENNETT FOUNDATION, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Jun 21, 1962 | Active |
| CITIZENS FOR BALANCED ENVIRONMENT AND TRANSPORTATION FOUNDATION, INC.Greenwich, CT · Dissolved | Greenwich, CT | Corporation | Jan 9, 1973 | Dissolved |
| CARL J. HERZOG FOUNDATION, INC. THEGreenwich, CT · Dissolved | Greenwich, CT | Corporation | Oct 23, 1952 | Dissolved |
| ESTHER S. KRAMER FOUNDATION, INC., THEGreenwich, CT · Dissolved | Greenwich, CT | Corporation | Dec 14, 1962 | Dissolved |
| STONE FOUNDATION, INC., THEGreenwich, CT · Dissolved | Greenwich, CT | Corporation | Jan 3, 1972 | Dissolved |
| GREENWICH ACADEMY, INC. THEGreenwich, CT · Active | Greenwich, CT | Corporation | May 13, 1924 | Active |
| GREENWICH ART SOCIETY INCORPORATED, THEGreenwich, CT · Active | Greenwich, CT | Corporation | Mar 10, 1958 | Active |
| GREENWICH ARTS COUNCIL, INC., THEGreenwich, CT · Active | Greenwich, CT | Corporation | Jan 19, 1973 | Active |
| GREENWICH SCHOLARSHIP ASSOCIATION, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Nov 1, 1972 | Active |
| GREENWICH BOAT AND YACHT CLUB, INCORPORATEDGreenwich, CT · Active | Greenwich, CT | Corporation | Apr 10, 1951 | Active |
| BOYS & GIRLS CLUB OF GREENWICH, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | May 17, 1923 | Active |
| GREENWICH CATHOLIC ELEMENTARY SCHOOL SYSTEM, INC., THEGreenwich, CT · Dissolved | Greenwich, CT | Corporation | Jul 22, 1970 | Dissolved |
| GREENWICH CHORAL SOCIETY, INCORPORATEDGreenwich, CT · Active | Greenwich, CT | Corporation | Dec 11, 1956 | Active |
| GREENWICH COUNTRY DAY SCHOOL HOLDING CORPORATION THEGreenwich, CT · Active | Greenwich, CT | Corporation | Jun 29, 1927 | Active |
| GREENWICH EXCHANGE FOR WOMAN'S WORK INCORPORATED, THEGreenwich, CT · Active | Greenwich, CT | Corporation | Jul 8, 1914 | Active |
| UJA/FEDERATION OF GREENWICH, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Feb 28, 1955 | Active |
| GREENWICH POLICE DEPARTMENT SCHOLARSHIP FUND, INC.Greenwich, CT · Forfeited | Greenwich, CT | Corporation | Dec 21, 1962 | Forfeited |
| HAMILTON TERRACE OWNERS ASSOCIATION, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Dec 13, 1976 | Active |
| HAWTHORNE BEACH MAINTENANCE ASSOCIATION, INCORPORATED, THEGreenwich, CT · Active | Greenwich, CT | Corporation | Jun 19, 1951 | Active |
| HOPE FARM PROPERTY OWNERS ASSOCIATION, INC. THEGreenwich, CT · Active | Greenwich, CT | Corporation | Nov 8, 1976 | Active |
| INDIAN HARBOR ASSOCIATION, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Aug 23, 1967 | Active |
| INDIAN HARBOR YACHT CLUB INCORPORATED THEGreenwich, CT · Active | Greenwich, CT | Corporation | Dec 7, 1901 | Active |
| ISRAEL PUTNAM HOUSE ASSOCIATION OF CONNECTICUT, INCORPORATED THEGreenwich, CT · Active | Greenwich, CT | Corporation | Dec 24, 1901 | Active |
| JUNIOR LEAGUE OF GREENWICH, CONNECTICUT, INCORPORATED, THEGreenwich, CT · Active | Greenwich, CT | Corporation | Feb 20, 1959 | Active |
| MEALS-ON-WHEELS, INC. OF GREENWICH, CONNECTICUTGreenwich, CT · Active | Greenwich, CT | Corporation | Feb 8, 1966 | Active |
| MERRY-GO-ROUND, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Jul 8, 1953 | Active |
| MILBROOK CLUB, INCORPORATED, THEGreenwich, CT · Active | Greenwich, CT | Corporation | Dec 31, 1940 | Active |
| MILBROOK OWNERS ASSOCIATION, INCORPORATED THEGreenwich, CT · Active | Greenwich, CT | Corporation | Jun 9, 1943 | Active |
| NEIGHBORS EVERYWHERE FOR EDUCATION AND DEVELOPMENT SOCIETY, INC.Greenwich, CT · Dissolved | Greenwich, CT | Corporation | Nov 3, 1967 | Dissolved |
| PILSUDSKI SOCIETY OF GREENWICH, CONNECTICUT, INCORPORATEDGreenwich, CT · Active | Greenwich, CT | Corporation | Mar 22, 1950 | Active |
| PUTNAM HILL CHAPTER DAUGHTERS OF THE AMERICAN REVOLUTION INCORPORATEDGreenwich, CT · Active | Greenwich, CT | Corporation | Dec 4, 1908 | Active |
| QUARRY KNOLL II CORPORATIONGreenwich, CT · Active | Greenwich, CT | Corporation | May 27, 1976 | Active |
| REVONAH WOODS PROPERTY OWNERS' ASSOCIATION, INCORPORATEDGreenwich, CT · Active | Greenwich, CT | Corporation | Apr 8, 1958 | Active |
| SILVER SHIELD ASSOCIATION, INCORPORATED, THEGreenwich, CT · Active | Greenwich, CT | Corporation | Apr 15, 1959 | Active |
| WOMAN'S CLUB OF GREENWICH INCORPORATEDGreenwich, CT · Active | Greenwich, CT | Corporation | Mar 24, 1926 | Active |
| YWCA GREENWICH, CONNECTICUT, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Jul 30, 1919 | Active |
| BURNING TREE COUNTRY CLUB, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | May 23, 1962 | Active |
| NEIGHBOR TO NEIGHBOR INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Oct 23, 1945 | Active |
| VOLUNTEER HOSE & CHEMICAL COMPANY NO. 2 INCORPORATEDGreenwich, CT · Forfeited | Greenwich, CT | Corporation | Aug 27, 1892 | Forfeited |
| GREENWICH MEDICAL GROUP, INC.Greenwich, CT · Dissolved | Greenwich, CT | Corporation | Mar 5, 1962 | Dissolved |
| SHERMAN FAIRCHILD FOUNDATION, INC.Greenwich, CT · Withdrawn | Greenwich, CT | Corporation | May 1, 1972 | Withdrawn |
| BYRAM HEIGHTS OWNERS, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Nov 15, 1977 | Active |
| GRIFFIN FORD, INC.Greenwich, CT · Forfeited | Greenwich, CT | Corporation | Oct 14, 1976 | Forfeited |
| MILLER MOTORCARS, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Dec 15, 1977 | Active |
| GRIFFIN AUTO LEASING, INC.Greenwich, CT · Dissolved | Greenwich, CT | Corporation | Oct 24, 1977 | Dissolved |
| TRELAWNY, INCORPORATEDGreenwich, CT · Merged | Greenwich, CT | Corporation | Sep 20, 1977 | Merged |
| MOUNTAIN WOOD ASSOCIATION, INC.Greenwich, CT · Active | Greenwich, CT | Corporation | Feb 3, 1978 | Active |
| DRUG COPY ASSOCIATES, INCORPORATEDGreenwich, CT · Dissolved | Greenwich, CT | Corporation | Feb 3, 1978 | Dissolved |