List of rulers of the Yoruba state of Oyo

Oyo, Oyo State, is the seat of the line of the rulers of Oyo. Their territory, a constituent rump state, is located in what is now Nigeria. Since the 1900 political absorption into Southern [Nigeria Protectorate|Southern Nigeria] of the kingdom that it once served as a metropolitan center, the traditional monarchy has been either a tool of British indirect rule or a legally recognised traditional polity within the republic of Nigeria.
In the Yoruba language, the word 'oba' means ruler or king. It is also common for the rulers of the various Yoruba domains to have their own special titles. In Ọ̀yọ empire, the oba is referred to as the Aláàfin, meaning owner of the palace.
The Oyo kings' list and chronology are based on the work of early Nigerian historians Samuel Ajayi Crowther and Samuel Johnson. The various sources do not always agree on names or order of reign, however, and dates before the 19th century are speculative. Numerous early Alaafins whose reigns were unremarkable may not have been remembered, with the total number possibly over 70. Any list, therefore, should be considered a rough reconstruction rather than an exact history.
List of Alaafins of Oyo: