town, Oyo state, southwestern Nigeria, at the intersection of roads from Oyo to Iwere and from Abeokuta to Okaka. In the early 1860s, the Yoruba Mission opened an Anglican church in the town. The Iseyin riots of 1916 protested the policy of Lord Lugard, the British governor-general, who made the traditional Yoruba alafin (“king”) at Oyo (25 miles 【40 km】 east-southeast) a public ruler responsible to the British colonial authorities.

A traditional centre for cotton spinning and weaving, Iseyin is best known for its dyeing (using locally grown indigo as well as imported dyes) of heavy, imported cloth. The town's Yoruba inhabitants cultivate tobacco and teak, as well as cotton and vegetable dyes, for export; most of their cassava (manioc), yam, corn (maize), and peanut (groundnut) crops are consumed locally. Although Iseyin was formerly a centre for opencast mining and the making of pig iron, its blacksmiths now depend upon imported iron for their metalworking. The town is the headquarters of a local government council and has several Christian-sponsored secondary schools and a hospital. Pop. (2006) local government area, 256,926.