Uji (宇治) is a place in Kyoto Prefecture, Japan.
Uji or UJI may also refer to:
- Uji (clan) (氏), a Japanese kin group system of the Kofun period
- Uji (Being-Time) (有時), "Being-Time," a teaching of Zen master Dōgen
- Jaume I University (Valencian: Universitat Jaume I, Spanish: Universidad Jaume I), a university in Castellón de la Plana, Spain
- Uzi fly, or uji fly, any of a number of fly species that parasitize silkworms
- Uji, a Kenyan variant of ogi which is a West African fermented porridge made of cereal grain