| Seiko Yamanaka | |
| Fullname: | Seiko Yamanaka |
| Birth Date: | 22 January 1989 |
| Birth Place: | Kōchi, Japan |
| Position: | Defender |
| Years1: | 2007–2008 |
| Clubs1: | JEF United Chiba |
| Caps1: | 0 |
| Goals1: | 0 |
| Years2: | 2010–2011 |
| Clubs2: | Fagiano Okayama |
| Caps2: | 9 |
| Goals2: | 0 |
| Totalcaps: | 9 |
| Totalgoals: | 0 |
is a former Japanese football player.
| Club performance | League | Cup | League Cup | Total | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Season | Club | League | Apps | Goals | Apps | Goals | Apps | Goals | Apps | Goals | |
| Japan | League | Emperor's Cup | J.League Cup | Total | |||||||
| 2007 | JEF United Chiba | J1 League | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |
| 2008 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | |||
| 2010 | Fagiano Okayama | J2 League | 9 | 0 | 0 | 0 | colspan="2" | - | 9 | 0 | |
| 2011 | 0 | 0 | colspan="2" | - | colspan="2" | - | 0 | 0 | |||
| Country | Japan | 9 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | ||
| Total | 9 | 0 | 0 | 0 | 0 | 0 | 9 | 0 | |||