# Seiji

Seiji (written: 誠二, 誠治, 誠史, 誠司, 誠次, 清二, 清治, 清次, 清志, 聖二, 聖治, 聖司, 征二, 征治, 征爾, 正慈, 成二, 精二, 菁児, 菁滋, 静児, 政二 or せいじ in hiragana) is a masculine Japanese given name. Notable people with the name include:
* Seiji Aochi (青地 清二, 1942–2008), Japanese ski jumper
* Seiji Ara (荒 聖治, born 1974), Japanese racing driver
* Seiji Arikawa (有川 清次, 1929–2016), Japanese politician
* Seiji Chiba (千葉 誠治, born 1964), Japanese film director and producer
* Seiji Ebihara (海老原 清治, born 1949), Japanese golfer
* Seiji Fujie (藤江 精二, born 1941), Japanese basketball player
* Seiji Fukushi (福士 誠治, born 1983), Japanese actor
* Seiji Hagiwara (萩原 誠司, born 1956), Japanese politician
* Seiji Hirao (平尾 誠二, born 1963), Japanese rugby union player
* Seiji Hisamatsu (久松 静児, 1912–1990), Japanese film director
* Seiji Honda (本田 征治, born 1976), Japanese footballer
* Seiji Inagaki (born 1973), Japanese hurdler
* Seiji Kameda (亀田 誠治, born 1964), Japanese musician and record producer
* Seiji Kameyama (亀山 晴児, born 1979), Japanese rapper better known as WISE
* Seiji Kaneko (金古 聖司, born 1980), Japanese footballer
* Seiji Katagiri (片桐 清二, born 1946), Japanese aviator
* Seiji Kihara (木原 誠二, born 1970), Japanese politician
* Seiji Kimura (木村 誠二, born 2001), Japanese footballer
* Seiji Kishi (岸 誠二), Japanese anime director
* Seiji Kobayashi (小林 誠司, born 1989), Japanese professional baseball player
* Seiji Koga (古賀 誠史, born 1979), Japanese footballer
* Seiji Kubo (born 1973), Japanese footballer
* Seiji Kudo (工藤 誠二, born 1945), Japanese cross-country skier
* Seiji Kumagai (熊谷 誠二, born 1967), Japanese voice actor
* Seiji Kurata (倉田 精二, born 1945), Japanese photographer
* Seiji Maehara (前原 誠司, born 1962), Japanese politician
* Seiji Mataichi (又市 征治, born 1944), Japanese politician
* Seiji Matsunaga (松永 清志, born 1954), Japanese sport wrestler
* Seiji Matsuyama (松山 せいじ, born 1975), Japanese manga artist
* Seiji Miyaguchi (宮口 精二, 1913–1985), Japanese actor
* Seiji Mizushima (水島 精二, born 1966), Japanese anime director
* Seiji Morita (森田 清次), Japanese film editor
* Seiji Nakamura (仲村 正治, born 1931), Japanese politician
* Seiji Nemoto (根本 誠次, born 1961), Japanese sport wrestler
* Seiji Noma (1878–1938), Japanese writer and publisher
* Seiji Ogawa (小川 誠二, born 1934), Japanese biologist
* Seiji Oko (大古 誠司, born 1948), Japanese volleyball player
* Seiji Ono, Japanese table tennis player
* Seiji Osaka (逢坂 誠二, born 1959), Japanese politician
* Seiji Ozawa (小澤 征爾, 1935–2024), Japanese conductor
* Seiji Saito (斉藤 誠司, born 1986), Japanese footballer
* Seiji Sakaguchi (坂口 征二, born 1942), Japanese professional wrestler
* Seiji Sasaki (佐々木 誠二, born 1965), Japanese voice actor
* Seiji Shibata (柴田 征二, born 1938), Japanese fencer
* Seiji Shinkai (新海 征治, born 1944), Japanese chemist
* Seiji Suzuki (鈴木 政二, born 1948), Japanese politician
* Seiji Takahashi (高橋 聖二, born 1993), Japanese ice hockey player
* Seiji Takaiwa (高岩 成二, born 1968), Japanese actor
* Seiji Takaku, Japanese psychologist
* Seiji Takeda (竹田 菁滋, born 1960), Japanese television producer
* Seiji Tōgō (東郷 青児, 1897–1978), Japanese painter and artist
* Seiji Ueda (上田 清二, born 1952), Japanese astronomer
* Seiji Yamada (山田 誠司, born 1966), Japanese ski mountaineer
* Seiji Yamamoto (山本 征治, born 1970), Japanese chef
* Seiji Yokoyama (横山 菁児, born 1935), Japanese composer
* Seiji Yoshida (吉田 清治, 1913–2000), Japanese writer and communist

## Fictional characters

* Seiji Matoba, the main antagonist of Natsume's Book of Friends
* Seiji Amasawa, one of the main characters of Whisper of the Heart
* Seiji Sagara, a supporting character in HappinessCharge PreCure!
* Seiji Nomi, one of antagonist of Accel World