| Name | category | pronunciation | meaning | other forms & related names |
|---|---|---|---|---|
| Uallas (m) | T | WAL lus | foreign | Wallace |
| Ualraig (m) | T | OO ul rik | ? | - |
| Uilleag (f) | Tr | WIL lak | German, fem. of William | Williamina |
| Uilleam (m) | Tr | OOL I um | Old German William, "will-helmet" | William |
| Uillidh; Uilleachan (m) | Tr | WIL lee; OOL luch an | dims. of Uilleam | Willie |
| Uisdean (m) | T | OOSH jun | ? | Hugh |
| Umfraidh (m) | Tr | OOM free | From Germanic Humphrey, perhaps meaning "Great peace." | Humphrey, Umfra |
| Una (f) | T | OO na | from an Irish name, meaning perhaps "lamb." | Winifred, Agnes, Juno |
| Uspaig (m) | Tr | OOS pek | from Norse, "unruly one" | Uspakr |
| Wallace (m) | S/A, L | WAL lis | ang. of Uallis, from a French place name. Sometimes used in memory of Scottish patriot William Wallace | Uallis |