Eiichi (written: 暎一, 栄一, 英一, 詠一 or 重廣) is a masculine Japanese given name. Notable people with the name include:
Eiichi Fukui (福井 英一) (1921–1954), Japanese manga artist
Eiichi Goto (後藤 英一) (1931–2005), Japanese computer scientist
Eiichi Itai (born 1951), Japanese golfer
Iwashita Eiichi (岩波 重廣) (1955–1999), Japanese sumo wrestler
Eiichi Kikuchi (菊池 英一) (born 1942), Japanese actor
Eiichi Koyano (小谷野 栄一) (born 1980), Japanese baseball player
Eiichi Kudo (工藤 栄一) (1929–2000), Japanese film director
Eiichi Matsumoto (松本 栄一) (1915–2004), Japanese photographer
Eiichi Moriwaki (森脇 英一), Japanese photographer
Eiichi Miyazato (宮里 栄一) (1922–1999), Japanese karateka and judoka
Eiichi Nakamura (chemist) (中村 栄一) (born 1951), Japanese chemist and academic
Eiichi Nakamura (field hockey) (中村 栄一) (1909–1945), Japanese field hockey player
Eiichi Nakao (中尾 栄一) (born 1930), Japanese politician
Ei-ichi Negishi (根岸 英一) (born 1935), Japanese chemist
Eiichi Ohtaki (大瀧 詠一) (born 1948–2013), Japanese musician
Eiichi Sakurai (桜井 栄一) (1909–1998), Japanese photographer
Eiichi Sato (佐藤 栄一) (born 1961), Japanese politician
Shibusawa Eiichi (渋沢 栄一) (1840–1931), Japanese businessman
Eiichi Sugimoto (杉本 栄一) (1901–1952), Japanese economist and academic
Eiichi Uemura (born 1975), Japanese footballer
Eiichi Yamamoto (山本 暎一) (born 1940), Japanese film director and screenwriter
Eiichi Yamashita (山下 栄一) (born 1947), Japanese politician
