Seiji (written: 誠二, 誠治, 誠史, 誠司, 誠次, 清二, 清治, 清次, 聖二, 聖治, 聖司, 征二, 征治, 征爾, 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 jumperSeiji Ara (荒 聖治) (born 1974), Japanese racing driverSeiji Chiba (千葉 誠治) (born 1964), Japanese film director and producerSeiji Ebihara (海老原 清治) (born 1949), Japanese golferSeiji Hagiwara (萩原 誠司) (born 1956), Japanese politicianSeiji Hirao (平尾 誠二) (born 1963), Japanese rugby union playerSeiji Hisamatsu (久松 静児) (1912–1990), Japanese film directorSeiji Honda (本田 征治) (born 1976), Japanese footballerSeiji Inagaki (born 1973), Japanese hurdlerSeiji Kameda (亀田 誠治) (born 1964), Japanese musician and record producerSeiji Kaneko (金古 聖司) (born 1980), Japanese footballerSeiji Kihara (木原 誠二) (born 1970), Japanese politicianSeiji Koga (古賀 誠史) (born 1979), Japanese footballerSeiji Kishi (岸 誠二), Japanese anime directorSeiji Kubo (born 1973), Japanese footballerSeiji Kumagai (熊谷 誠二) (born 1967), Japanese voice actorSeiji Kurata (倉田 精二) (born 1945), Japanese photographerSeiji Maehara (前原 誠司) (born 1962), Japanese politicianSeiji Mataichi (又市 征治) (born 1944), Japanese politicianSeiji Matsuyama (松山 せいじ) (born 1975), Japanese manga artistSeiji Miyaguchi (宮口 精二) (1913–1985), Japanese actorSeiji Mizushima (水島 精二) (born 1966), Japanese anime directorSeiji Morita (森田 清次), Japanese film editorSeiji Nakamura (仲村 正治) (born 1931), Japanese politicianSeiji Nemoto (根本 誠次) (born 1961), Japanese sport wrestlerSeiji Ogawa (小川 誠二) (born 1934), Japanese biologistSeiji Oko (大古 誠司) (born 1948), Japanese volleyball playerSeiji Ono, Japanese table tennis playerSeiji Osaka (逢坂 誠二) (born 1959), Japanese politicianSeiji Ozawa (小澤 征爾) (born 1935), Japanese conductorSeiji Sakaguchi (坂口 征二) (born 1942), Japanese professional wrestlerSeiji Sasaki (佐々木 誠二) (born 1965), Japanese voice actorSeiji Shibata (柴田 征二) (born 1938), Japanese fencerSeiji Shinkai (新海 征治) (born 1944), Japanese chemistSeiji Suzuki (鈴木 政二) (born 1948), Japanese politicianSeiji Takahashi (高橋 聖二) (born 1993), Japanese ice hockey playerSeiji Takaiwa (高岩 成二) (born 1968), Japanese actorSeiji Takaku, Japanese psychologistSeiji Takeda (竹田 菁滋) (born 1960), Japanese television producerSeiji Tōgō (東郷 青児) (1897–1978), Japanese painter and artistSeiji Ueda (上田 清二) (born 1952), Japanese astronomerSeiji Yamada (山田 誠司) (born 1966), Japanese ski mountaineerSeiji Yokoyama (横山 菁児) (born 1935), Japanese composerSee also: Seiji (青磁) for celadon wares