- UNDEFINED - UNDEFINED (2093)
- UTESCH - UTESCH (57)
- UNDERWOOD - UNDERWOOD (48)
- URBAN - URBAN (32)
- URBANSKI - URBANSKI (21)
- UNGER - UNGER (16)
- USSERY - USSERY (16)
- ULRICH - ULRICH (16)
- USHER - USHER (13)
- UTLEY - UTLEY (13)
- UPCHURCH - UPCHURCH (12)
- ULLRICH - ULLRICH (11)
- ULMER - ULMER (11)
- URQUHART - URQUHART (10)
- UNDEFIMILESNED - UNDEFIMILESNED (9)
- ULATOWSKI - ULATOWSKI (9)
- UPTON - UPTON (9)
- UHL - UHL (8)
- UTECHT - UTECHT (7)
- U - U (6)
- ULM - ULM (6)
- UZ_ZAMAN - UZ_ZAMAN (6)
- UCKERMARK - UCKERMARK (6)
