Otto III was crowned as King of Germany in 983 at the age of three, shortly after his father's death in Southern Italy while campaigning against the Byzantine Empire and the Emirate of Sicily.
Otto III dimahkotai sebagai Raja Jerman pada 983 pada usia tiga tahun, tak lama setelah ayahnya meninggal di selatan Italia saat berkampanye melawan Kekaisaran Bizantium dan Keemiratan Sisilia.