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| Namn | Antal | Förekommande stavningsvarianter |
| Unge | 141 | Onge (1) Unge (40) Unger (100) |
| Udd | 132 | Ud (1) Udd (105) Udda (1) Uddar (1) Udde (23) Üdd (1) |
| Uggla | 95 | Uggla (64) Ugla (29) Ugll (1) Uhl (1) |
| Ullman | 76 | Ollman (12) Olman (6) Uhlman (1) Ullman (40) Ulman (17) |
| Ulf | 69 | Ulf (49) Ulff (13) Wlff (7) |
| Ursell | 69 | Uhrsell (2) Ursell (67) |
| Unggren | 56 | Unggren (39) Ungren (17) |
| Urlin | 56 | Uhrlin (27) Uhrlins (3) Urlin (26) |
| Ungfelt | 48 | Ungfeld (1) Ungfeldt (24) Ungfelt (14) Ungfäldt (1) Ungfällt (1) Ungfält (7) |
| Uddenberg | 42 | Uddenberg (42) |
| Ulfsparre | 38 | Ulfsparre (38) |
| Uddesson | 36 | Uddason (1) Uddeson (3) Uddesson (32) |
| Ulrik | 34 | Oelrich (8) Ohlrich (3) Olrich (7) Uldrick (1) Ulrich (12) Ulrick (1) Ulrik (1) Wlrich (1) |
| Ungesson | 34 | Ungarsson (3) Ungas (2) Ungason (9) Ungasson (13) Unges (1) Ungesson (5) Wngeson (1) |
| Urström | 34 | Uhrström (33) Urhström (1) |
| Ulriksson | 33 | Uldrichs (1) Ullrichs (3) Ulrichs (1) Ulrichsen (5) Ulrichson (8) Ulrichssen (1) Ulrichsson (1) Ulricson (1) Ulricsson (1) Ulriks (3) Ulriksen (3) Ulriksson (5) |
| Ur | 33 | Uhr (33) |
| Ungesdotter | 32 | Ungasdotter (6) Ungassons dotter (1) Ungesdotter (25) |
| Ulfsberg | 31 | Ulfberg (3) Ulfsberg (28) |
| Ullberg | 28 | Uhlberg (4) Ulberg (2) Ullberg (17) Ullsberg (4) Ulsberg (1) |
| Uller | 26 | Uller (26) |
| Ullner | 25 | Uhlner (1) Ullner (16) Ulner (7) Ulnér (1) |
| Ullström | 25 | Uhlström (8) Ullström (12) Ulström (5) |
| Ubbesdotter | 20 | Ubbasdoter (1) Ubbasdotter (9) Ubbassdatter (1) Ubbassdotter (1) Ubbassdåtter (4) Ubbesdotter (1) Ubbesdåtter (1) Ubbessdotter (1) Ubbisdotter (1) |
| Ulmstedt | 18 | Ulmstedt (18) |
| Unbeck | 17 | Uhnbeck (8) Unbeck (9) |
| Utter | 17 | Uter (1) Utter (16) |
| Utterbom | 17 | Utterbohm (9) Utterbom (8) |
| Utterström | 17 | Utterström (17) |
| Ullgren | 16 | Uhlgreen (2) Uhlgren (3) Ulgreen (2) Ullgreen (2) Ullgren (7) |
| Uppling | 16 | Uppling (16) |
| Usby | 16 | Usby (12) Usbÿ (4) |
| Unonius | 15 | Unonius (15) |
| Ugerup | 14 | Ugerop (7) Ugerup (7) |
| Ung | 14 | Ung (11) Ungh (3) |
| Utterman | 14 | Utterman (14) |
| Uppgren | 13 | Upgren (1) Uppgren (12) |
| Uppman | 13 | Uppman (13) |
| Utterberg | 13 | Uterberg (1) Utterberg (12) |
| Ulfsköld | 12 | Ulfschiöld (4) Ulfskjöld (3) Ulfsköld (5) |
| Uddberg | 11 | Uddberg (11) |
| Ulander | 9 | Ulander (8) Ullander (1) |
| Ulin | 9 | Uhlin (2) Ulin (7) |
| Uno | 9 | Uno (9) |
| Ungersven | 8 | Ungersven (6) Ungersvenn (1) Ungesven (1) |
| Uddesdotter | 7 | Uddesdotter (6) Uddsdotter (1) |
| Uttergren | 7 | Uttergren (7) |
| Uby | 6 | Uby (6) |
| Urväder | 6 | Uhrväder (3) Uhrwäder (2) Urväder (1) |
| Ulfsson | 5 | Olfzon (1) Uffeson (2) Ulfson (1) Ulfsson (1) |
| Ulfström | 5 | Ulfström (5) |
| Ulmgren | 5 | Ulmgreén (1) Ulmgren (4) |
| Unro | 5 | Uhnru (4) Unro (1) |
| Urbeck | 5 | Uhrbeck (3) Urbech (2) |
| Uttermöller | 5 | Uttermoller (1) Uttermöhlen (1) Uttermöller (3) |
| Udke | 4 | Udke (1) Utke (3) |
| Ulfsax | 4 | Ulfsak (1) Ulfsax (3) |
| Unér | 4 | Unéer (2) Unér (1) Unnér (1) |
| Unerus | 4 | Unerus (1) Unnerus (3) |
| Ungerman | 4 | Ungerman (4) |
| Uppenberg | 4 | Uppenberg (4) |
| Upplander | 4 | Upplander (4) |
| Urne | 4 | Urne (4) |
| Utman | 4 | Uthman (3) Utman (1) |
| Uttke | 4 | Uttke (4) |
| Uddman | 3 | Uddeman (2) Uddman (1) |
| Udfelt | 3 | Udfell (1) Udfelt (2) |
| Ulfklou | 3 | Ulfklou (3) |
| Ullholm | 3 | Ullholm (3) |
| Unger | 3 | Ungar (1) Ünger (1) Önger (1) |
| Unruch | 3 | Unruch (1) Unruh (2) |
| Uppmark | 3 | Upmark (2) Uppmark (1) |
| Uppriktig | 3 | Uppricktig (3) |
| Urberg | 3 | Uhrberg (1) Urberg (2) |
| Urea | 3 | Uræa (2) Urreadotter (1) |
| Ursin | 3 | Ursin (3) |
| Utfelt | 3 | Utfelt (3) |
| Ubbesson | 2 | Ubbas (2) |
| Udbye | 2 | Udbye (2) |
| Ugl | 2 | Ugl (2) |
| Ugrup | 2 | Ugrup (1) Ugrupp (1) |
| Ulan | 2 | Uhlan (1) Ulan (1) |
| Ulick | 2 | Uhlich (2) |
| Ulss | 2 | Ulss (1) Wlss (1) |
| Ulvedal | 2 | Uhlvedal (1) Ulvedahl (1) |
| Ulvin | 2 | Ulfvin (1) Ulvin (1) |
| Undin | 2 | Undin (2) |
| Unghans | 2 | Unghans (2) |
| Unne | 2 | Uhnne (2) |
| Unnov | 2 | Unnov (1) Unof (1) |
| Uppström | 2 | Uppstrom (1) Uppström (1) |
| Urfelt | 2 | Urfeldt (1) Urfelt (1) |
| Urling | 2 | Urling (2) |
| Urman | 2 | Uhrman (2) |
| Usbeck | 2 | Usbeck (1) Usbäck (1) |
| Utberg | 2 | Utberg (2) |
| Ubeckel | 1 | Ubeckel (1) |
| Udde | 1 | Ude (1) |
| Uddén | 1 | Uddén (1) |
| Uddholm | 1 | Uddholm (1) |
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