| Cassidy Church | | — | — | — | |
| Cassidy United Methodist Church | | — | — | — | |
| Cassiskapel | | — | — | — | |
| Cassoday Community Church | | — | 223 South Washington, Cassoday, KS 66842-9101 | — | |
| Cassowary Road United Church | | — | — | — | |
| Casstown Lutheran Church | | — | — | — | |
| Casstown United Methodist Church | | — | — | — | |
| Cassville African Methodist Episcopal Church | | — | — | — | |
| Cassville Baptist Church | | — | 1663 Cassville Road Northwest, Cassville, GA 30121 | — | |
| Cassville Church | | — | — | — | |
| Cassville Lutheran Church | | — | — | — | |
| Cassville United Methodist Church | | — | — | — | |
| Castaic Community African Methodist Episcopal Church | | — | 28930 Morningside Drive, Val Verde, CA 91384 | — | |
| Castalia Missionary Baptist Church | | — | — | — | |
| Castalian Springs United Methodist Church | | — | — | — | |
| Castana Community Church | | — | — | — | |
| Castanea Church | | — | — | — | |
| Castanea United Methodist Church | | — | 23 East Brown st, Castanea, 17745 | — | |
| Casteel Church | | — | — | — | |
| Castelar United Presbyterian Church | | — | — | — | |
| Castell i Ermita de Sant Miquel de les Torrosselles | | — | — | — | |
| Castellau Independent Chapel | | — | — | — | |
| Castelo Forte | | — | 194 Rua Benjamin Cavet, Curitiba, 82300340 | — | |
| Castile United Church of Christ | | — | — | — | |
| Castillo Del Rey | | — | — | — | |
| Castillo Del Rey Uriangato | | — | Boulevard Decreto 204, Uriangato, 38985 | — | |
| Castillo del Rey Victoria | | — | — | — | |
| Castillo Fuerte | | — | — | — | |
| Castine Church of the Brethren | | — | — | — | |
| Castine United Methodist Church | | — | — | — | |
| Castle Bromwich Methodist Church | | — | — | — | |
| Castle Camps United Reform Church | | — | — | — | |
| Castle chapel of Saint John of Nepomuk | | — | — | — | |
| Castle Church | | — | — | — | |
| Castle Combe Congregational Church | | — | Upper Castle Combe | — | |
| Castle Douglas Parish Church | | — | — | — | |
| Castle Drogo Chapel | | — | — | — | |
| Castle End Mission | | — | 5 Pound Hill, Cambridge, CB3 0AE | — | |
| Castle Hedingham United Reformed Church | | — | Queen Street, Castle Hedingham, CO9 3HA | — | |
| Castle Heights Baptist Church | | — | — | — | |
| Castle Heights Missionary Baptist Church | | — | — | — | |
| Castle Hill Baptist Church | | — | Castle Hill, Warwick, CV34 4EX | — | |
| Castle Hill Baptist Church | | — | — | — | |
| Castle Hill Congregational Church | | — | Dryden Road, Ipswich, IP1 6QD | — | |
| Castle Hill Moravian Church | | — | — | — | |
| Castle Hill Seventh Day Adventist Church | | — | 84 Cecil Avenue | — | |
| Castle Hill United Reformed Church | | — | Doddridge Street, Northampton, NN1 2RN | — | |
| Castle Hills Christian Church | | — | — | — | |
| Castle Hills Nazarene Church | | — | 5707 West Castle Drive, Boise, ID 83703 | — | |
| Castle Methodist Church | | — | Maidenburgh Street, Colchester | — | |