Uji could refer to:
- Uji, the ancient system of Rokugani family groups.
- Daidoji Uji, the Daidoji Daimyo.
- Daidoji Uji, the Daidoji Daimyo in the nightmare realm known as the Thousand Years of Darkness, who crossed the realms and was known in Rokugan as Daidoji Fumisato.
- Matsu Uji, the husband of Shosuro Sushanume and main character of the plays Mercy and the Tragedy of Matsu Uji.