| EAST CATHOLIC HIGH SCHOOL CORPORATIONManchester, CT · Active | Manchester, CT | Corporation | Jul 10, 1961 | Active |
| NORTHWEST CATHOLIC HIGH SCHOOL CORPORATIONWest Hartford, CT · Active | West Hartford, CT | Corporation | Jul 10, 1961 | Active |
| ST. PAUL CATHOLIC HIGH SCHOOL CORPORATIONBristol, CT · Active | Bristol, CT | Corporation | Sep 20, 1966 | Active |
| CATHOLIC MISSION AID SOCIETY OF HARTFORD, INC.Bloomfield, CT · Active | Bloomfield, CT | Corporation | Dec 30, 1929 | Active |
| CONNECTICUT CATHOLIC CONFERENCE, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Sep 12, 1968 | Active |
| THE HARTFORD ROMAN CATHOLIC DIOCESAN CORPORATIONBloomfield, CT · Active | Bloomfield, CT | Corporation | Jul 14, 1911 | Active |
| THE ST. VINCENT DEPAUL MISSION OF WATERBURY, INC.Waterbury, CT · Active | Waterbury, CT | Corporation | Mar 22, 1978 | Active |
| THE ST. VINCENT DEPAUL MISSION OF BRISTOL, INC.Bristol, CT · Active | Bristol, CT | Corporation | Jun 2, 1983 | Active |
| CATHOLIC CHARITIES, INC. - ARCHDIOCESE OF HARTFORDHartford, CT · Active | Hartford, CT | Corporation | Jun 24, 1983 | Active |
| CATHOLIC CEMETERIES ASSOCIATION OF THE ARCHDIOCESE OF HARTFORD, INC.Location not reported, CT · Active | Location not reported, CT | Corporation | Dec 21, 1961 | Active |
| THE SAINT THOMAS SEMINARY OF HARTFORD, INC.Location not reported, CT · Active | Location not reported, CT | Other | Not reported | Active |
| THE BENEVOLENT ASSOCIATION FOR PRIESTS OF THE ARCHDIOCESE OF HARTFORD, INCORPORATEDHartford, CT · Active | Hartford, CT | Corporation | Nov 5, 2002 | Active |
| CATHEDRAL GREEN, INC.Bloomfield, CT · Active | Bloomfield, CT | Corporation | Jan 6, 2006 | Active |
| HARTFORD EDUCATIONAL BROADBAND, INC.Bloomfield, CT · Active | Bloomfield, CT | Corporation | Jul 26, 2007 | Active |
| THE HARTFORD CATHOLIC DEVELOPMENT CORPORATIONBloomfield, CT · Active | Bloomfield, CT | Corporation | Mar 19, 2008 | Active |
| CONNECTICUT CATHOLIC PUBLIC AFFAIRS CONFERENCE, INC.Hartford, CT · Active | Hartford, CT | Corporation | Dec 30, 2009 | Active |
| FRANCIS XAVIER PLAZA, INC.Waterbury, CT · Active | Waterbury, CT | Corporation | Aug 23, 2011 | Active |
| ORTV, INC.Prospect, CT · Active | Prospect, CT | Corporation | Oct 30, 2013 | Active |
| The Connecticut Catholic Foundation, Inc.Bloomfield, CT · Active | Bloomfield, CT | Corporation | Feb 22, 2016 | Active |
| VOS ESTIS LUX MUNDI FUND, LLCBloomfield, CT · Active | Bloomfield, CT | LLC | Mar 31, 2020 | Active |
| SAINT THOMAS AQUINAS, INC.Bloomfield, CT · Active | Bloomfield, CT | Corporation | Apr 24, 2020 | Active |
| ALL SAINTS CATHOLIC ACADEMY, INC.New Haven, CT · Active | New Haven, CT | Corporation | Jun 26, 2020 | Active |
| TUQUE AND KIPPAH, LLCHartford, CT · Dissolved | Hartford, CT | LLC | Feb 19, 2021 | Dissolved |
| DENTAL TEAM OF SOUTH WINDSOR, PLLCHartford, CT · Forfeited | Hartford, CT | LLC | Feb 19, 2021 | Forfeited |
| Saint Joseph Housing CorporationBloomfield, CT · Active | Bloomfield, CT | Corporation | Apr 30, 2025 | Active |
| Hartford Catholic School Project, Inc.Bloomfield, CT · Active | Bloomfield, CT | Corporation | Jun 3, 2025 | Active |