Koji

Koji or kōji means:
Kōji, the common name of the fungus Aspergillus oryzae which produces soy sauce, sake, etc.

 People
Koji Kondo (born 1960), composer of video game music

 Time period
In Japan, Kōji may mean:
Kōji (Heian period) (康治), Japanese era, 1142–1144
Kōji (Muromachi period) (弘治), Japanese era, 1555–1558