born 16 September 1998 is a Japanese badminton player who specializes in men's doubles. He is affiliated with the BIPROGY team. His junior career was highlighted by three mixed team bronze medals: one at the 2016 World Junior Championships and two at the Asian Junior Championships in 2015 and 2016. With partner Hiroki Okamura, he achieved a career-high world ranking of No. 33. Their best BWF World Tour result was a runner-up finish at the 2019 Canada Open Super 100. Onodera has won two international titles on the BWF International Challenge/Series circuit: the 2018 Sydney International with Okamura and the 2023 Malaysia International with Takuto Inoue.
After high school, Onodera attended Waseda University, majoring in Sports science and competing for its badminton team. He enrolled with the goal of obtaining a teaching license, inspired by his parents who were teachers. As a freshman in 2017, he helped the Waseda team win the All Japan Student Championships, the university's first national team title in 24 years. The following year, he was part of the team's successful title defense and also won the men's doubles title with partner Takuma Obayashi. Onodera graduated from Waseda University in March 2021.
In 2023, Onodera partnered with Takuto Inoue, winning the Malaysia International and securing a third-place finish at the All Japan Championships. He later teamed up with Daigo Tanioka, reaching the semifinals of the 2024 Guwahati Masters and finishing as runners-up at the 2025 Thailand International.
Men's doubles
| 2019 | Canada Open | Super 100 | Hiroki Okamura | Mathias Boe Mads Conrad-Petersen | 12–21, 18–21 | Runner-up |
| 2018 | Sydney International | Hiroki Okamura | Danny Bawa Chrisnanta Terry Hee | 21–6, 21–11 | Winner | |
| 2022 (II) | Indonesia International | Hiroki Okamura | Rahmat Hidayat Pramudya Kusumawardana | 21–23, 21–16, 15–21 | Runner-up | |
| 2023 | Malaysia International | Takuto Inoue | Fazriq Razif Wong Vin Sean | 21–16, 18–21, 21–15 | Winner | |
| 2025 | Thailand International | Daigo Tanioka | Narut Saengkham Apichasit Teerawiwat | 15–21, 17–21 | Runner-up | |
| 2025 | Bendigo International | Daigo Tanioka | Chen Zhi-ray Lin Yu-chieh | 21–17, 21–23, 21–23 | Runner-up |
| 2016 | Dutch Junior | Hiroki Okamura | Kyohei Yamashita Naoki Yamazawa | 17–21, 21–11, 22–20 | Winner | |
| 2016 | German Junior | Hiroki Okamura | Kyohei Yamashita Naoki Yamazawa | 14–21, 19–21 | Runner-up | |
| 2016 | India Junior International | Hiroki Okamura | Krishna Prasad Garaga Dhruv Kapila | 11–5, 12–14, 11–9, 13–11 | Winner |
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