Okimi is a historical term which generally refers to the chief of the Yamato sovereignty (Japan) from the latter half of the third century to the end of the seventh century which is from the Kofun (tumulus) period to the Asuka period.
大王（おおきみ）とは、一般に3世紀後半から7世紀末頃、古墳時代から飛鳥時代にかけてのヤマト王権（倭国）の首長を指していう歴史用語。