奥约州（英文：Oyo State）是尼日利亚36州之一，首府伊巴丹 (英文:Ibadan).

Ọyọ, usually referred to as Oyo State to distinguish it from the city of Oyo, is an inland state in south-western Nigeria, with its capital at Ibadan. It is bounded in the north by Kwara State, in the east by Osun State, in the south by Ogun State and in the west partly by Ogun State and partly by the Republic of Benin.