Seiya Yamaguchi

{{short description|Japanese footballer}}

{{Infobox football biography

|name=Seiya Yamaguchi
山口 聖矢

|image=

|image_size=

|caption=

|fullname=Seiya Yamaguchi

|birth_date={{Birth date and age|1993|9|2}}

|birth_place=Zama, Kanagawa, Japan

|death_date=

|death_place=

|height={{Height|m=1.74}}

|position=Defender

|currentclub=SC Sagamihara

|clubnumber=30

|youthyears1=2012–2015|youthclubs1=Kanto Gakuin University

|years1=2016|clubs1=Saurcos Fukui | caps1 = 2 | goals1 = 0

|years2=2017–|clubs2=SC Sagamihara | caps2 = 1 | goals2 = 0

|club-update=22 February 2018

}}

{{Nihongo|Seiya Yamaguchi|山口 聖矢|Yamaguchi Seiya|born September 2, 1993}} is a Japanese football player.{{J.League player|23246}} He plays for SC Sagamihara.