Connecticut - Area of significance: Religion
| Abington Congregational Church |
| Ann Street Historic District |
| Avon Congregational Church |
| Bellamy, Joseph, House |
| Bowen, Henry C., House |
| Bozrah Congregational Church and Parsonage |
| Bushnell Park |
| Camp Bethel |
| Canaan Pine Grove Association Camp Meeting |
| Center Burying Yard, Old |
| Christ Church |
| Christ Episcopal Church and Tashua Burial Ground |
| Church of the Holy Trinity and Rectory |
| Columbia Green Historic District |
| Danielson Main Street Historic District |
| East Plymouth Historic District |
| East Windsor Hill Historic District |
| Emmanuel Church |
| Enfield Shakers Historic District |
| First Church of Christ |
| First Congregational Church of Cheshire |
| First Congregational Church of East Hartford and Parsonage |
| First Congregational Church of East Haven |
| First Congregational Church of Plainfield |
| Fourth Congregational Church |
| Fuller, John, House |
| Glebe House |
| Goshen Historic District |
| Hastings Hill Historic District |
| Hebron Center Historic District |
| Holcomb, Nathaniel, III, House |
| Huntington Street Baptist Church |
| Jordan Village Historic District |
| Lakeville Manor |
| Litchfield Historic District |
| Little Pootatuck Brook Archeological Site |
| Long Society Meetinghouse |
| Main Street Historic District |
| Main Street Historic District |
| Main Street Historic District |
| Mansfield Center Cemetery |
| Mansfield, Richard, House |
| Marlborough Congregational Church |
| Mather Homestead |
| Meeting House Hill Historic District |
| Metropolitan African Methodist Episcopal Zion Church |
| New England Hebrew Farmers of the Emanuel Society Synagogue and Creamery Site |
| New Haven District Campground |
| Old Town Hall |
| Plainfield Street Historic District |
| Sabbathday House |
| Second Church of Christ |
| Sharon Historic District |
| South Congregational Church |
| Stafford Hollow Historic District |
| Steward's House, Foreign Mission School |
| St. James' Episcopal Church |
| St. John's Episcopal Church |
| Temple Beth Israel |
| Temple Beth Israel |
| Trinity Church |
| Union Baptist Church |
| Union Church/St. Paul's Church |
| Union Green Historic District |
| Union Society of Phoenixville House |
| Unitarian Meetinghouse |
| Warren Congregational Church |
| Whitneyville Congregational Church |
| Williams, Eleazer, House |
| Williams, Warham, House |
Data from United States Park Service and Wikidata
