Seiji (written: , , , , , , , , , , , , , , , , , , , , , or in hiragana) is a masculine Japanese given name. Notable people with the name include:
*, Japanese ski jumper
*, Japanese racing driver
*, Japanese politician
*, Japanese film director and producer
*, Japanese golfer
*, Japanese basketball player
*, Japanese actor
*, Japanese politician
*, Japanese rugby union player
*, Japanese film director
*, Japanese footballer
*
Seiji Inagaki (born 1973), Japanese hurdler
*, Japanese musician and record producer
*
Seiji Kameyama (亀山 晴児, born 1979), Japanese rapper better known as WISE
*, Japanese footballer
*, Japanese aviator
*, Japanese politician
*, Japanese footballer
*, Japanese anime director
*, Japanese professional baseball player
*, Japanese footballer
*
Seiji Kubo (born 1973), Japanese footballer
*, Japanese cross-country skier
*, Japanese voice actor
*, Japanese photographer
*, Japanese politician
*, Japanese politician
*, Japanese sport wrestler
*, Japanese manga artist
*, Japanese actor
*, Japanese anime director
*, Japanese film editor
*, Japanese politician
*, Japanese sport wrestler
*
Seiji Noma (1878–1938), Japanese writer and publisher
*, Japanese biologist
*, Japanese volleyball player
*
Seiji Ono, Japanese table tennis player
*, Japanese politician
*, Japanese conductor
*, Japanese footballer
*, Japanese professional wrestler
*, Japanese voice actor
*, Japanese fencer
*, Japanese chemist
*, Japanese politician
*, Japanese ice hockey player
*, Japanese actor
*
Seiji Takaku, Japanese psychologist
*, Japanese television producer
*, Japanese painter and artist
*, Japanese astronomer
*, Japanese ski mountaineer
*, Japanese chef
*, Japanese composer
*, Japanese writer and communist
See also
*
Celadon, known in Japanese as Seiji (青磁)
{{given name
Japanese masculine given names