| Name | Insgesamt | Name | Insgesamt |
|---|---|---|---|
| Unterseer | 2 | Ursprung | 3 |
| Unterwasser | 3 | Urwyler | 3 |
| Unverricht | 1 | Urzach, von | 1 |
| Unwin | 1 | Usselmann | 1 |
| Unzällig | 1 | Ussen | 2 |
| Unzbel?, von | 1 | Ussermann | 1 |
| Uoler | 2 | Uster | 27 |
| Upson | 1 | Usteri | 548 |
| Urach | 3 | Ustermann | 1 |
| Urach, von | 1 | Utenheim, von | 5 |
| Urbach | 2 | Utesh | 1 |
| Urban | 5 | Uth | 1 |
| Urbensteck | 1 | Utiger | 1 |
| Urech | 12 | Utley | 1 |
| Urfer | 3 | Uttiger | 1 |
| Urler | 1 | Uttinger | 15 |
| Urlin, d' | 1 | Utz | 23 |
| Urner | 29 | Utzigen, von | 3 |
| Urschi | 2 | Utzinger | 30 |
| Urseler | 2 | Utzli | 2 |
| Ursinens, d' | 1 | Utzmann | 1 |
| Ursler | 1 | Uxem, Van | 1 |