| Koki Matsuzawa | |
| Birth Date: | 3 April 1992 |
| Birth Place: | Yokohama, Kanagawa, Japan |
| Height: | 1.82 m |
| Currentclub: | Vegalta Sendai |
| Clubnumber: | 29 |
| Position: | Goalkeeper |
| Youthyears1: | 1999–2003 |
| Youthclubs1: | Jokita Asuka FC |
| Youthyears2: | 2004–2007 |
| Youthclubs2: | Tokyo Verdy |
| Youthyears3: | 2008–2010 |
| Youthclubs3: | Kashiwa HS (RKU) |
| Youthyears4: | 2011–2014 |
| Youthclubs4: | Waseda University |
| Years1: | 2012 |
| Clubs1: | JEF United Chiba |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 2015–2016 |
| Clubs2: | Vissel Kobe |
| Caps2: | 0 |
| Goals2: | 0 |
| Years3: | 2017–2022 |
| Clubs3: | Tokushima Vortis |
| Caps3: | 1 |
| Goals3: | 0 |
| Nationalyears1: | 2007 |
| Nationalteam1: | Japan U15 |
| Nationalyears2: | 2008 |
| Nationalteam2: | Japan U16 |
| Nationalyears3: | 2009 |
| Nationalteam3: | Japan U17 |
| Club-Update: | 10 December 2022 (UTC) |
| Years4: | 2023– |
| Clubs4: | → Vegalta Sendai (loan) |
| Caps4: | 0 |
| Goals4: | 0 |
is a Japanese footballer currently playing as a goalkeeper for Vegalta Sendai.
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| Club | Season | League | National Cup | League Cup | Other | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Division | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |||
| JEF United Chiba | 2012 | J.League Division 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| Vissel Kobe | 2015 | J1 League | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 2016 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| Total | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| Tokushima Vortis | 2017 | J2 League | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 2018 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| 2019 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| 2020 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| 2021 | J1 League | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | ||
| 2022 | J2 League | 1 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 5 | 0 | ||
| Total | 1 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 5 | 0 | |||
| Career total | 1 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 5 | 0 | |||