Oji, Ōji or OJI may refer to:
People Chibuzor Oji (born 1977), stage name Faze, Nigerian musician and actor Geoffrey Oji, Nigerian singer and songwriter, winner of the seventh season of Project Fame West Africa Megumi Ōji (born 1975), Japanese actress Sam Oji (1985–2021), English footballer Oji Umozurike, Nigerian law professor, activist and former chairman of the African Commission on Human and Peoples' Rights Tshi, also called Oji, a group of tribes in Ghana
Places Ōji, Nara, a town in Nara Prefecture, Japan Ōji Station (Nara), a railway station Ōji Station (Tokyo), a railway station O-J-I, also called Oji, a mountain in Baxter State Park, Maine, United States
Other uses Oji Paper Company, a Japanese paper manufacturer Open Java Interface Ọjị (Igbo for the kola nut), an important component of Igbo culture Mochizō Ōji, a main character in Tamako Market, a Japanese anime television series Gohei and Michiko Ōji, Mochizō's parents