Kütahya is a city in western Turkey with 237,804 inhabitants, lying on the Porsuk river, at 969 metres above sea level. It is the capital of Kütahya Province, inhabited by some 564,294 people. The region of Kütahya has large areas of gentle slopes with agricultural land culminating in high mountain ridges to the north and west.
The city's Greek name was Kotyaion, Latinized in Roman times as Cotyaeum.