List of Grand Prix motorcycle racers: U
# List of Grand Prix motorcycle racers: U

## List of Grand Prix motorcycle racers

* A
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* D
* E
* F
* G
* H
* I
* J
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| Name | Seasons | Championships | MotoGP Wins | 500cc Wins | 350cc Wins | Moto2 Wins | 250cc Wins | Moto3 Wins | 125cc Wins | 80cc Wins | 50cc Wins |
| - | - | - | - | - | - | - | - | - | - | - | - |
| Carlo Ubbiali | 1949-1960 | 9 250cc - 1956, 1959-1960 125cc - 1951, 1955-1956, 1958-1960 | 0 | 0 | 0 | 0 | 13 | 0 | 26 | 0 | 0 |
| Tsutomu Udagawa | 1990-1993 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Ed Uding | ? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Noboru Ueda | 1991-2002 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 13 | 0 | 0 |
| Hideaki Ueno | 1991 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Katsuji Uezu | 1997, 1999-2000 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Youichi Ui | 1995-2004, 2006-2007 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 | 0 |
| Tohru Ukawa | 1994-2005 | 0 | 1 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 |
| Robert Ulm | ? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Stephan Ulrich | ? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Franco Uncini | 1976-1985 | 1 500cc - 1982 | 0 | 5 | 0 | 0 | 2 | 0 | 0 | 0 | 0 |
| Brett Underwood | 2003 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Hisashi Unemoto | 1988-1992 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Franz Ungar | ? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Patrick Unger | 2002-2005, 2007 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Malcolm Uphill | 1968-1970 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Dominic Usher | ? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| Joan Uviña | ? | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
