Eiji

is a common masculine Japanese given name.

Eiji can be written using different kanji characters which can mean:
栄治, "prosperity, peace"
英治, "great, peace"
英二, "great, second"
永次, "eternity, next"

People
Eiji Aonuma (英二, born 1963), Japanese designer and director of video games

Eiji Toyoda (英二, born 1913), chairman of Toyota Motor Corporation

Eiji Yoshikawa (英治, 1892–1962), Japanese historical novelist

Eiji Kawashima Japanese National Football Team's Goalkeeper

Other 
 Eiji (永治),  Japanese era name (1141-1142)