| Ryuya Nishio | |
| Fullname: | Ryuya Nishio |
| Birth Date: | 16 May 2001 |
| Birth Place: | Osaka, Japan |
| Height: | 1.80 m |
| Position: | Centre back |
| Currentclub: | Cerezo Osaka |
| Clubnumber: | 33 |
| Youthyears1: | 2009–2013 |
| Youthclubs1: | FC Grasion |
| Youthyears2: | 2014–2019 |
| Youthclubs2: | Cerezo Osaka |
| Years1: | 2018–2020 |
| Clubs1: | Cerezo Osaka U-23 |
| Caps1: | 53 |
| Goals1: | 1 |
| Years2: | 2020– |
| Clubs2: | Cerezo Osaka |
| Caps2: | 55 |
| Goals2: | 2 |
| Nationalyears1: | 2019 |
| Nationalteam1: | Japan U18 |
| Nationalcaps1: | 1 |
| Nationalgoals1: | 0 |
| Nationalyears2: | 2019– |
| Nationalteam2: | Japan U19 |
| Nationalcaps2: | 2 |
| Nationalgoals2: | 0 |
| Club-Update: | 16:42, 5 November 2022 (UTC) |
is a Japanese footballer who plays as a centre back for Cerezo Osaka.
Nishio was born in Osaka Prefecture on 16 May 2001. He joined J1 League club Cerezo Osaka from youth team in 2018.
Japan U23