Koya may refer to:
Places Iraq Koya; (), a town in Iraqi Kurdistan Koya University, a university in that town
Japan Mount Kōya, a mountain in Japan Kōya, Wakayama, a town on the top of Mount Kōya Kōya Station (Tokyo), a train station in Adachi, Tokyo, Japan Nankai Kōya Line, a railway line in Osaka and Wakayama Prefectures between Osaka and Koyasan
Sierra Leone Kingdom of Koya, a pre-colonial African state in what is now northern Sierra Leone Koya, Sierra Leone, a village in Sierra Leone
People and languages Koya (name), a given name and surname Koya (Malabar), a Muslim community in south India Gyele people, Cameroonian pygmies Kola people, Gabonese pygmies Koya language, a language spoken in India Koya (tribe), a scheduled tribe in India, speakers of the Koya language Koya, ring name of Indian professional wrestler Mahabali Shera Koyah (fl. 1787 – 1795), Haida chief in British Columbia
Other uses KOYA, radio station in South Dakota, United States Koya score, a tiebreaker criterion for group tournaments