Haruchika Aoki

is a Japanese former Grand Prix motorcycle road racer. He was a two-time F.I.M. 125cc world champion. He is the youngest of three Aoki brothers who have competed in motorcycle Grand Prix races.

Aoki began his Grand Prix career in 1993 with Honda. He won two consecutive 125cc world championships in 1995 and 1996 with Honda before moving up to the 250cc class in 1997. After two years in the 250cc class, Aoki made the move to the 500cc class in 1999. In , he competed in the Superbike World Championship on a Ducati before returning to Grand Prix racing in 2001. Racing a V-twin, two-stroke Honda NSR500V, he finished the season as the top privateer. He almost pulled off an upset that year when he "won" the second half of the restarted Italian Grand Prix in torrential rain, but the race was decided on aggregate times from the first and second parts, meaning he was classified only fifth. Aoki retired after the 2002 season.

Afterwards, Aoki participated in the Japanese Auto Race series. He returned to Road Racing in 2016, when he raced in the MFJ All-Japan Road Race JP250 Championship aboard a Yamaha YZF-R25. He is one of Valentino Rossi's best mentors.

Races by year (key) (Races in bold indicate pole position, races in italics indicate fastest lap) Year Class Machine 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Pos Pts 1993 125cc Honda AUS14 MAL11 JPN7 SPA19 AUT16 GER20 NEDRet EUR10 SMRRet GBR18 CZERet ITA13 USA5 FIM13 14th 39 1994 125cc Honda AUS17 MAL10 JPN17 SPA14 AUT25 GERDNQ NED12 ITA9 FRA12 GBR13 CZE19 USA4 ARG12 EUR3 12th 59 1995 125cc Honda AUS1 MAL18 JPN1 SPA1 GER1 ITA1 NED5 FRA1 GBRRet CZE2 BRA3 ARG14 EUR1 1st 224 1996 125cc Honda MAL2 INA2 JPN2 SPA1 ITA2 FRA7 NED3 GER3 GBR8 AUSNC CZE6 IMONC CAT5 RIO1 AUS2 1st 220 1997 250cc Honda MAL 5 JPN 8 SPA 5 ITA 14 AUT 8 FRA 6 NED Ret IMO 8 GER 9 BRA 7 GBR 8 CZE Ret CAT 8 INA 6 AUS 14 8th 102 1998 250cc Honda JPN11 MAL4 SPA6 ITA6 FRA6 MADRet NED3 GBR5 GERRet CZERet IMO6 CAT7 AUS8 ARGRet 6th 112 1999 500cc TSR-Honda MAL15 JPNRet SPA12 FRA13 ITA11 CAT10 NED9 GBRRet GER6 CZE13 IMO12 VALWD AUS11 RSA12 BRA15 ARG15 15th 54 2001 500cc Honda JPN12 RSA12 SPADNS FRA ITA5 CAT15 NED14 GBRRet GERRet CZE14 POR11 VALRet PACRet AUS14 MALRet BRA14 17th 33