List of Grand Prix motorcycle racers: U

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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