is a Japanese Grand Prix motorcycle racer who competes in the Moto3 World Championship for Honda Team Asia.
Mitani won the 2024 Asia Talent Cup. He made his Grand Prix debut at the 2025 Indonesian motorcycle Grand Prix, acting as a replacement rider.
Career Early career Mitani was born in Iwase in Sakuragawa, Japan. He rode a motorbike for the first time at the age of three."三谷然（ミタニゼン）" global-wifi.com (in Japanese). Retrieved 15 July 2025. After performing well in national junior categories, finishing runner-up in the Tsukuba Road Race Championship's J-GP3 class in 2021, and later 10th in the 2022 All Japan Road Race Championship—he was selected to compete in the 2023 Asia Talent Cup at the age of 15."2021 筑波ロードレース選手権シリーズ 第4戦" tsukuba-circuit.jp (in Japanese), 9 October 2021. Retrieved 16 October 2025. Mitani completed his first Cup season with six podium finishes, placing fifth in the final standings.
In his second Asia Talent Cup season in 2024, Mitani won seven of the twelve total races on the calendar, and finished on the podium in all but two."イデミツ・アジア・タレントカップ開幕戦優勝!" tng.ac.jp (in Japanese). Retrieved 15 July 2025. This would crown him champion with still one more round to go."三谷然が2024チャンピオンに輝く｜イデミツ・アジア・タレントカップ第5戦" pmfansite.com (in Japanese), 2 November 2024. Retrieved 15 July 2025. He also participated in the TVS class of the 2024 Asia Road Racing Championship as a wildcard entry at the Motegi round, where he set pole position and finished both races in second place, behind Hiroki Ono."6月9日（日）レポート" jrr.jp (in Japanese), 9 June 2024. Retrieved 2 October 2025.
After his successful stint in the Asia Talent Cup, Mitani was promoted to both the Red Bull MotoGP Rookies Cup and FIM JuniorGP World Championship for the 2025 season. He started his Rookies Cup spell with consistent results, building momentum and climbing the order as the rest of the season unfolded, clinching two podium finishes in total, with a second place at Sachsenring and a third place in Race 1 of the final round at Misano, barely missing out on a third podium in Race 2.
Moto3 World Championship Rivacold Snipers Team (2025) On 2 October 2025, Rivacold Snipers Team announced Mitani would be making his Grand Prix debut at the 2025 Indonesian motorcycle Grand Prix, acting as a replacement rider for injured Nicola Carraro. On Saturday, Mitani qualified 24th and, despite running as high as 17th during the Sunday race, he crashed out on lap 11 and retired."Moto3インドネシア予選｜古里太陽が5番手タイムで2列目を確保。代役でデビュー三谷はQ1突破ならず" jp.motorsport.com (in Japanese), 5 October 2025. Retrieved 4 November 2025.
Honda Team Asia (2025–) One month after making his Grand Prix debut, Mitani was announced to make his full-time debut in the 2026 Moto3 World Championship with Honda Team Asia, alongside Veda Pratama. Ahead of the 2025 Portuguese Grand Prix, Honda Team Asia announced Mitani would race in the final two rounds of the 2025 season, effectively making an early debut with the team as he replaced the injured Tatchakorn Buasri.
Career statistics
Tsukuba Road Race Championship
Races by year
(key) (Races in bold indicate pole position; races in italics indicate fastest lap. Superscript numbers indicate overall results, including both national and international classes.) Year Class Bike 1 2 3 4 Pos Pts 2020 J-GP3 Honda TSU1 TSU2 TSU3 TSU4 7th 13 2021 J-GP3 Honda TSU1 TSU2 TSU3 TSU4 2nd 67
All Japan Road Race Championship
Races by year
(key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Class Bike 1 2 3 4 5 6 Pos Pts 2022 J-GP3 Honda MOT SUG TSU AUT OKA SUZ 10th 32 2023 J-GP3 Honda MOT SUG TSU AUT OKA SUZ 18th 12 2024 J-GP3 Honda MOT SUG TSU AUT OKA SUZ 13th 22
Asia Talent Cup
Races by year (key) (Races in bold indicate pole position, races in italics indicate fastest lap) Year Bike 1 2 3 4 5 6 Pos Pts R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 2023 Honda MAL MAL JPN JPN INA INA THA THA SEP SEP QAT QAT 5th 141 2024 Honda QAT QAT MAL MAL INA INA JPN JPN THA THA SEP SEP 1st 259
ARRC TVS Asia One Make Championship Races by year (key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Bike 1 2 3 4 5 6 Pos Pts R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 2024 TVS BUR BUR ZHU ZHU MOT MOT MAN MAN SEP SEP BUR BUR 14th 40
FIM JuniorGP World Championship
Races by year
(key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Bike 1 2 3 4 5 6 7 8 9 10 11 12 Pos Pts 2024 Honda MIS1 MIS2 EST CAT1 CAT2 ALG1 ALG2 JER1 JER2 ARA EST1 EST2 34th 0 2025 Honda EST JER1 JER2 MAG ARA1 ARA2 MIS1 MIS2 CAT1 CAT2 VAL1 VAL2 11th 68
Red Bull MotoGP Rookies Cup
Races by year (key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Bike 1 2 3 4 5 6 7 Pos Pts R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 R1 R2 2025 KTM JER JER LMS LMS ARA ARA MUG MUG SAC SAC RBR RBR MIS MIS 7th 104
Grand Prix motorcycle racing By season Season Class Motorcycle Team Race Win Podium Pole FLap Pts Plcd Moto3 Honda Rivacold Snipers Team 1 0 0 0 0 0 38th Honda Team Asia 2 0 0 0 0 Moto3 Honda Honda Team Asia 14 0 0 0 0 2* 26th* Total 17 0 0 0 0 2
By class Class Seasons 1st GP 1st pod 1st win Race Win Podiums Pole FLap Pts WChmp Moto3 2025–present 2025 Indonesia 17 0 0 0 0 2 0 Total 2025–present 17 0 0 0 0 2 0
Races by year (key) (Races in bold indicate pole position; races in italics indicate fastest lap) Year Class Bike 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 Pos Pts Moto3 Honda THA ARG AME QAT SPA FRA GBR ARA ITA NED GER CZE AUT HUN CAT RSM JPN INA AUS MAL POR VAL 38th 0 Moto3 Honda THA BRA USA SPA FRA CAT ITA HUN CZE NED GER GBR ARA RSM AUT JPN INA AUS MAL QAT POR VAL 26th* 2*
Season still in progress.
Notes
References
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