| Rio Sakuma | |
| Birth Date: | 14 April 1997 |
| Birth Place: | Niigata, Japan |
| Height: | 1.79 m |
| Currentclub: | Geylang International |
| Clubnumber: | 13 |
| Position: | centre-back, right-back |
| Youthclubs1: | Yoshida SC |
| Youthyears2: | 2010–2015 |
| Youthclubs2: | Albirex Niigata |
| Collegeyears1: | 2016–2019 |
| College1: | Ryutsu Keizai University |
| Years1: | 2018–2019 |
| Clubs1: | Ryutsu Keizai Dragons Ryugasaki |
| Caps1: | 33 |
| Goals1: | 2 |
| Years2: | 2020 |
| Clubs2: | Albirex Niigata (S) |
| Caps2: | 14 |
| Goals2: | 1 |
| Years3: | 2021 |
| Clubs3: | Tiffy Army |
| Caps3: | 18 |
| Goals3: | 0 |
| Years4: | 2022– |
| Clubs4: | Geylang International |
| Caps4: | 47 |
| Goals4: | 4 |
| Club-Update: | 9:30, 15 Dec 2021 (UTC) |
is a Japanese professional footballer who currently plays as a centre-back or right-back for Singapore Premier League Club Geylang International FC, whom his the vice-captain.
Rio was a product of Albirex Niigata U18 team before joining and playing for Ryutsu Keizai University school team.
In 2018, Rio joined Ryutsu Keizai Dragons Ryugasaki which the club consisted largely of student players from Ryutsu Keizai University and served as a farm team of Ryutsu Keizai University.
On 4 January 2020, Rio joined Albirex Niigata Singapore, a satellite team of his former club, Albirex Niigata. On 8 November 2020, he scored his first goal for the club against Hougang United in a 4-0 home win. Rio won his first ever piece of silverware en route to helping the club to win the 2020 Singapore Premier League title.
On 24 January 2021, Rio joined Cambodian Premier League club, Tiffy Army playing in the top tier of the Cambodia league.
On 1 January 2022, Rio returned to Singapore to joined Geylang International. He changed his jersey to no.9 for the 2023 Singapore Premier League season where on 28 February 2023, he scored a brace against Young Lions in a 4-2 home win.
| Club | Season | League | Cup | Other | Total | ||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Division | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |||
| RKU Dragons | 2018 | Japan Football League | 16 | 2 | 0 | 0 | 0 | 0 | 16 | 2 | |
| 2019 | 17 | 0 | 0 | 0 | 0 | 0 | 17 | 0 | |||
| Total | 33 | 2 | 0 | 0 | 0 | 0 | 33 | 2 | |||
| Albirex Niigata (S) | 2020 | Singapore Premier League | 14 | 1 | 0 | 0 | 0 | 0 | 14 | 1 | |
| Total | 14 | 1 | 0 | 0 | 0 | 0 | 14 | 1 | |||
| Tiffy Army | 2021 | Cambodian Premier League | 18 | 0 | 0 | 0 | 0 | 0 | 18 | 0 | |
| Geylang International | 2022 | Singapore Premier League | 26 | 1 | 3 | 0 | 0 | 0 | 29 | 1 | |
| 2023 | 22 | 3 | 0 | 0 | 0 | 0 | 22 | 3 | |||
| 2024–25 | 6 | 2 | 0 | 0 | 0 | 0 | 6 | 2 | |||
| Total | 72 | 6 | 3 | 0 | 0 | 0 | 75 | 6 | |||
| Career total | 119 | 8 | 3 | 0 | 0 | 0 | 122 | 8 | |||