| Name | Background | Date | Feast Day |
| Ubaldo Baldassini | Bishop of Gubbio | C12th | 16/05 |
| Uguzo/Lucius | Shepherd in Italian Alps murdered by former master | C13th | 16/08 |
| Ulched/Uchal | Liechulched, Anglesey | 06/04 | |
| Ulfrid | English martyr, missionary, Germany/Sweden | d1028 | 18/01 |
| Ulphia//Wulfe/Wulfia | hermitess nr Amiens | d750 | 31/01 |
| Ulphus | 22/01 | ||
| Ulpian | 03/04 | ||
| Ulric | Bishop of Augsburg | d975 | 04/07, 10/07 |
| Ulrich | Abbot/founder of Zell & monk at Cluny | d1093 | 14/07 |
| Ulrich, Blessed | Einseldeln, Switzerland | d c980 | |
| Ulrick | See 'Wulfric' | 20/02 | |
| Ultan | 17/01 | ||
| Ultan | 14/03 | ||
| Ultan | 04/04 | ||
| Ultan | 16/04 | ||
| Ultan | 27/04 | ||
| Ultan | Abbot, Burgh Castle, East Anglia & Fosses, France (bro of Fursey & FoilIan) | d686 | 01/05, 02/05 |
| Ultan | 24/05 | ||
| Ultan | 01/07 | ||
| Ultan | 03/07 | ||
| Ultan | 05/07 | ||
| Ultan | 10/07 | ||
| Ultan | 12/07 | ||
| Ultan | 13/07 | ||
| Ultan | 09/08 | ||
| Ultan | Bishop of Ardbreccan, Meath | d657 | 04/09 |
| Ultan | 07/09 | ||
| Ultan | 22/11 | ||
| Ultan | 22/12 | ||
| Uni/Huno/Unno | Bishop of Bremen-Hamburg | d936 | 17/09 |
| Urban | 07/12 | ||
| Urban | of Langres | 02/04 | |
| Urban I | Pope | d230 | 25/05, 26/05 |
| Urban V, Blessed | Pope | d1370 | 19/12 (Trans 22/01) |
| Urban | Bishop of Langres | d390 | 02/04, 23/01 |
| Urban, Theodore + comps | 05/09 | ||
| Urbicius/Urbitius | Bishop of Metz | d420 | 20/03 |
| Urbitius/Urbez | French monk captured by Saracens, later hermit in Spain | d805 | 15/12 |
| Ursicenus | Bishop of Pavia | d c216 | 21/06 |
| Urpasian | martyr in Nicomedia | d295 | 13/03 |
| Urith/Hieritha | virgin martyr, Chittlehampton | C6th/8th | 08/06, 08/07 |
| Ursicinus | Abbot of Ursanne, Irish missionary | d625 | 20/12 |
| Ursicinus | Bishop of Brescia | d347 | 01/12 |
| Ursicinus | Bishop of Cahors | d585 | 13/12, 20/12 |
| Ursicinus | Bishop of Sens | d380 | 24/07 |
| Ursicinus | physician martyred in Ravenna | d c67 | 19/06 |
| Ursicius | Illyrian martyr, Nicomedia | d304 | 14/08 |
| Ursinus | Bishop of Bourges | C3rd | 29/12, 30/12 (Trans 09/11, 12/06) |
| Ursmar | Abbot-bishop of Lobbes | d713 | 19/04 |
| Ursmar | Bishop of Liège/Cambrai | 18/04 | |
| Ursula + 10 or 11000 comps | Virgin martyrs, Cologne | C4th | 21/10 |
| Ursula/Ursulina, Blessed | virgin & visionary, Parma | 1375-1410 | 07/04, 06/04 |
| Ursus | Archdeacon of Aosta | C4th/6th | 13/04 |
| Ursus | Bishop of Auxerre | d508 | 30/07 31/07 (28/07) |
| Ursus | Bishop of Troyes | 25/07 | |
| Ursus, Victor + comps | Martyrs, Theban Legion | d286 | 30/09 |
| Usthazanes, + 12 monks | Persian Bishop martyr | d341 | 20/10 |
| Utto | of Metten | 03/10 |
This collection of names was compiled by Kate Monk and is ©1997, Kate Monk.
Copies may be made for personal use only.