Seigo
# Seigo

Seigo (written: 誠吾, 斉吾 or 省吾) is a masculine Japanese given name. Notable people with the name include:

* Seigo Asada (浅田 斉吾, born 1980), Japanese darts player
* Seigo Kitamura (北村 誠吾, born 1947), Japanese politician
* Seigo Minami (皆見 省吾, 1893–1975), Japanese dermatologist
* Seigo Nakao, head of Japanese Studies at Oakland University
* Seigo Shimokawa (下川 誠吾, born 1975), Japanese footballer

Seigō or Seigou (written: 正剛, 成豪, 制剛 or 聖剛) is a separate masculine given name, though it may be romanized the same way. Notable people with the name include:

* Seigo Kobayashi (小林 成豪, born 1994), Japanese footballer
* Seigō Nakano (中野 正剛, 1886–1943), Japanese politician
* Seigo Narazaki (楢﨑 正剛, born 1976), Japanese footballer
* Seigo Saito (齋藤 制剛, born 1977), Japanese judoka
* Seigo Tada (多田 正剛, 1922–1997), founder of Goju-Ryu Seigokan Karatedo
* Seigo Yamamoto (山本 聖剛, born 1971), Japanese drift driver
