| Underwood Hills Presbyterian Church | | — | — | — | |
| Underwood Heights Church of Christ | | — | 151 | — | |
| Underwood Grove Church | | — | — | — | |
| Underwood Church | | — | — | — | |
| Underwood Church | | — | — | — | |
| Underwood Baptist Church | | — | 2104 Underwood Road, La Porte, TX 77571 | — | |
| Underwood Baptist Church | | — | — | — | |
| Underup Kirke | | — | — | — | |
| Undersåkers kyrka | | — | — | — | |
| Undersviks kyrka | | — | — | — | |
| Understed Kirke | | — | — | — | |
| Underskiddaw Parish Room | | — | Raven Lane, Keswick, CA12 4PN | — | |
| Underhill Methodist Church | | — | — | — | |
| Underhill Baptist Church | | — | — | — | |
| Underground Holy Trinity Church | | — | — | — | |
| Underground Chapel | | — | — | — | |
| Underberg Congregational Church | | — | — | — | |
| Underbank Chapel | | — | Sheffield, S6 6AP | — | |
| Under Watchful Care Ministries | | — | — | — | |
| Under His Wings Christian Church | | — | 7493 Indian Reserve Road, Alpena, MI 49707 | — | |
| Under Coast Church of God in Christ | | — | 318 Market Street, Needles, CA 92363 | — | |
| Undenäs kyrka | | — | — | — | |
| Undenominational Pentecostal Holiness Church | | — | 620 Harris Street, Cove City, NC 28523 | — | |
| Unconditional Love of Christ in Action Church | | — | 3627 Greenmount Avenue, Baltimore, MD 21218 | — | |
| Uncommon Church | | — | 601 East Airport Freeway, 76039 | — | |
| Uncle Joes Chapel | | — | SR 124, OH | — | |
| UNC Chapel | | — | — | — | |
| Unbroken Fellowship Church | | — | OR | — | |
| Unbound Fellowship | | — | 2200 Roberts Road, Medford, OR 97504 | — | |
| Unbeko Andra Maria | | — | — | — | |
| Unbeflecktes Herz Mariä | | — | 7 Ehrenstraße, Morsbach, 51597 | — | |
| Unbeflecktes Herz Mariens, Wedel | | — | 13 Feldstraße, Wedel, 22880 | — | |
| Unbeflecktes Herz Mariens | | — | 8 Hauptstraße, Grafenwöhr, 92655 | — | |
| Unbeflecktes Herz Mariae | | — | 10 Pferdsfelder Straße, Ebensfeld, 96250 | — | |
| Unbeflecktes Herz Maria | | — | — | — | |
| Unbefleckte Maria | | — | — | — | |
| Unbefleckte Empfängnis Mariä | | — | 25 Hauptstraße, Riedelberg, 66484 | — | |
| Unbefleckte Empfängnis Mariä | | — | — | — | |
| Unbefleckte Empfängnis Mariä | | — | 15 Bavenstedter Hauptstraße, Hildesheim | — | |
| Unbefleckte Empfängnis Mariens | | — | — | — | |
| Unbefleckte Empfängnis Mariens | | — | — | — | |
| Unbefleckte Empfängnis Mariens | | — | 59 Hauptstraße, Herrnbaumgarten, 2171 | — | |
| Unbefleckte Empfängnis Mariens | | — | 8 Dorfstraße, Freren, 49832 | — | |
| Unbefleckte Empfängnis Mariens | | — | 21 Hauptstraße, Oberwiesen, 67294 | — | |
| Unbefleckte Empfängnis Mariens | | — | 1 Am Kirchweg, Greding, 91171 | — | |
| Unbefleckte Empfängnis Mariens | | — | 4 Bergstraße, Imsbach, 67817 | — | |
| Unbefleckte Empfängnis Mariens | | — | 13 Lehenstraße, Aalen, 73433 | — | |
| Unbefleckte Empfängnis Mariens | | — | 14 Ludwig-Bauer-Straße, Giebelstadt, 97232 | — | |
| Unbefleckte Empfängnis Mariens | | — | 1 Steinbacher Straße, Eiterfeld, 36132 | — | |
| Unbefleckte Empfängnis Mariens | | — | 2 Bamberger Straße, Stegaurach, 96135 | — | |