Unless otherwise noted (as BC), years are in CE / AD1 individuals that were given the title of empress posthumously 2 individuals elevated to the rank of empress due to their position as honorary mother of the emperor 3 Shōshi served briefly as honorary empress for her younger brother Emperor Go-Daigo
Unless otherwise noted (as BC), years are in CE / AD1 individuals that were given the title of empress dowager posthumously 2 title removed in 896 due to a suspected affair with head priest of the Toko-ji Temple; title posthumously restored in 943 3 was made High Empress or de jure empress dowager during her husband's reign