| DELIVERANCE CHURCH OF GOD IN CHRIST INDEPENDENTLocation not reported, CT · Active | Location not reported, CT | Corporation | Jan 30, 1964 | Active |
| DOMINICAN OBLATES OF JESUS CORPORATIONLocation not reported, CT · Merged | Location not reported, CT | Other | Apr 28, 1971 | Merged |
| EAST END BAPTIST TABERNACLE CHURCH, INCORPORATEDLocation not reported, CT · Active | Location not reported, CT | Corporation | Dec 10, 1954 | Active |
| ECCLESIASTICAL SOCIETY FOR THE FELLOWSHIP OF CONNECTICUT CONGREGATIONAL CHRISTIAN CHURCHES, INC. THELocation not reported, CT · Active | Location not reported, CT | Corporation | Mar 28, 1960 | Active |
| COMMUNITY BIBLE CHURCH OF NORTH HAVENLocation not reported, CT · Dissolved | Location not reported, CT | Other | Oct 6, 1959 | Dissolved |
| WINTERGREEN HILLS CONGREGATION OF JEHOVAH'S WITNESSESLocation not reported, CT · Active | Location not reported, CT | Corporation | Jan 9, 1964 | Active |
| HOLY CROSS CHURCH OF NEW MILFORD, CONN.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Oct 18, 1929 | Dissolved |
| HOLY CROSS INDEPENDENT NORTH AMERICAN OLD ROMAN CATHOLIC CHURCH CORPORATIONLocation not reported, CT · Active | Location not reported, CT | Corporation | Feb 23, 1967 | Active |
| HOLY CROSS POLISH NATIONAL CATHOLIC CHURCH OF HARTFORDLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Jan 15, 1919 | Dissolved |
| HOLY GHOST RUSSIAN ORTHODOX GREEK CATHOLIC CHURCH, THELocation not reported, CT · Active | Location not reported, CT | Corporation | May 15, 1931 | Active |
| HOLY TRINITY ORTHODOX CHURCH OF NEW BRITAIN, CONNECTICUT, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Apr 23, 1926 | Active |
| HOPEWELL BAPTIST CHURCH OF HARTFORD, CONN.Location not reported, CT · Active | Location not reported, CT | Corporation | Feb 16, 1959 | Active |
| LIBERTY CHRISTIAN CENTER INTERNATIONALLocation not reported, CT · Active | Location not reported, CT | Corporation | Mar 25, 1954 | Active |
| INTER-CHURCH MINISTRY TO STUDENTS, INCLocation not reported, CT · Active | Location not reported, CT | Corporation | Jul 24, 1963 | Active |
| LATVIAN EVANGELICAL LUTHERAN CONGREGATION OF PEACE, INCORPORATED THELocation not reported, CT · Dissolved | Location not reported, CT | Other | Mar 27, 1957 | Dissolved |
| LATVIAN LUTHERAN CHURCH OF WILLIMANTIC, CONN, THELocation not reported, CT · Dissolved | Location not reported, CT | Other | Jan 10, 1951 | Dissolved |
| LEE MEMORIAL METHODIST CHURCHLocation not reported, CT · Active | Location not reported, CT | Other | Jul 15, 1958 | Active |
| LITTLE BETHEL AFRICAN METHODIST EPISCOPAL CHURCH OF GREENWICH, INCORPORATED CONNECTICUT.Location not reported, CT · Active | Location not reported, CT | Other | Feb 8, 1935 | Active |
| LITTLE MT. HEBRON PRAYER GARDEN CHURCH OF GODLocation not reported, CT · Active | Location not reported, CT | Corporation | Nov 20, 1972 | Active |
| ROCK TABERNACLE MINISTRIESLocation not reported, CT · Active | Location not reported, CT | Corporation | Nov 20, 1969 | Active |
| CHRIST THE GOOD SHEPHERD LUTHERAN CHURCHLocation not reported, CT · Active | Location not reported, CT | Corporation | Jun 14, 1954 | Active |
| MANCHESTER CONGREGATION OF JEHOVAH'S WITNESSES, MANCHESTER, CONNECTICUT, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | May 28, 1959 | Active |
| NAZARENE CHURCHLocation not reported, CT · Active | Location not reported, CT | Corporation | Jun 21, 1976 | Active |
| NEW LIFE UNITED METHODIST CHURCHLocation not reported, CT · Active | Location not reported, CT | Corporation | Apr 25, 1955 | Active |
| NEW HOPE CHURCH, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Sep 27, 1962 | Active |
| REDEMPTORIST FATHERS OF CONNECTICUT, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Aug 1, 1962 | Active |
| RELIGIOUS OF OUR LADY OF THE CENACLE INCORPORATED, THELocation not reported, CT · Active | Location not reported, CT | Corporation | Apr 8, 1947 | Active |
| ROCK OF AGES CHURCH OF GOD IN CHURCH INTERNATIONAL, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Aug 7, 1970 | Active |
| ROCK OF HOREB PENTECOSTAL CHURCH INC., THELocation not reported, CT · Active | Location not reported, CT | Corporation | Sep 5, 1961 | Active |
| STAFFORD SPRINGS, CONN., CONGREGATION OF JEHOVAH'S WITNESSES, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jun 27, 1958 | Active |
| ROWAYTON UNITED METHODIST CHURCH, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Mar 4, 1959 | Active |
| SECOND CONGREGATIONAL CHURCHLocation not reported, CT · Active | Location not reported, CT | Corporation | Apr 13, 1909 | Active |
| WATERFORD CONGREGATIONAL UNITED CHURCH OF CHRIST, INC.Location not reported, CT · Dissolved | Location not reported, CT | Corporation | Dec 1, 1905 | Dissolved |
| SHEPHERD OF THE HILLS EVANGELICAL LUTHERAN CHURCH, INCORPORATEDLocation not reported, CT · Dissolved | Location not reported, CT | Corporation | Jun 7, 1962 | Dissolved |
| SISTERS OF THE HOLY FAMILY OF NAZARETH, INC.Location not reported, CT · Merged | Location not reported, CT | Other | Jun 29, 1962 | Merged |
| THE FIRST POLISH BAPTIST CHURCHLocation not reported, CT · Active | Location not reported, CT | Corporation | Dec 15, 1969 | Active |
| TALMUD TORAH OF BRADLEY STREET, NEW HAVEN, INCORPORATEDLocation not reported, CT · Active | Location not reported, CT | Other | Jul 3, 1917 | Active |
| THOMAS CHAPEL CHURCH OF CHRIST, DISCIPLES OF CHRIST, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Jul 29, 1958 | Active |
| UNITED PENTECOSTAL CHURCH OF THE REDEEMERLocation not reported, CT · Active | Location not reported, CT | Corporation | Jun 29, 1962 | Active |
| TRINITY FAITH TEMPLE CHURCH OF GODLocation not reported, CT · Active | Location not reported, CT | Corporation | Aug 4, 1964 | Active |
| TRINITY EPISCOPAL CENTER ASSOCIATION, INCORPORATED, THELocation not reported, CT · Active | Location not reported, CT | Corporation | Oct 26, 1961 | Active |
| TRINITY UNITED CHURCH OF CHRISTLocation not reported, CT · Consolidated | Location not reported, CT | Other | May 24, 1966 | Consolidated |
| TRUE VINE HOLINESS CHURCH OF PORTLAND, CONNECTICUTLocation not reported, CT · Active | Location not reported, CT | Corporation | May 25, 1964 | Active |
| TRUMBULL CONGREGATION OF JEHOVAH'S WITNESSES, INCORPORATED, THELocation not reported, CT · Active | Location not reported, CT | Corporation | Dec 10, 1964 | Active |
| TRUSTEES OF DINGLETOWN COMMUNITY CHURCHLocation not reported, CT · Active | Location not reported, CT | Corporation | Jun 11, 1957 | Active |
| TRUTH FOR SPIRITUAL AWAKENINGLocation not reported, CT · Dissolved | Location not reported, CT | Other | Jun 7, 1973 | Dissolved |
| CATHEDRAL OF PRAISE CHURCH OF GOD IN CHRIST, INTERNATIONALBridgeport, CT · Active | Bridgeport, CT | Corporation | Jan 15, 1957 | Active |
| MARY OUR QUEEN ROMAN CATHOLIC CHURCH CORPORATION OF SOUTHINGTON, CONNECTICUT, THELocation not reported, CT · Merged | Location not reported, CT | Other | Oct 13, 1961 | Merged |
| EMERALD BENEVOLENT SOCIETYLocation not reported, CT · Active | Location not reported, CT | Other | Apr 13, 1876 | Active |
| INDEPENDENT ORDER OF TRUE SISTERS.Location not reported, CT · Active | Location not reported, CT | Other | May 5, 1892 | Active |