Olubadan (Yoruba: Lord of Ibadan; "the Olu of Ibadan") is the royal title of the king of Ibadanland in Nigeria.
Ibadan was founded in the 16th century, but the present Yoruba people only took control around 1820. By 1850, they had established their unusual succession principle, which is quite different compared with other traditional Yoruba rulers in that it alternates between two lines. It usually takes decades to groom an Olubadan for the stool through stages of chieftaincy promotion, thus meaning that just about any male born title-holder of the metropolitan centre is a potential king.
According to the outline history of Ibadan by Oba Isaac Akinyele, Ibadan was founded in the 18th century. Around 1820, an army of Egba, Ijebu, Ife and Oyo people won the town after the collapse of Owu. After a struggle between the victors, the Oyo gained control in 1829. Being a city established in a period of internecine wars, the warchiefs, led by the Balogun, became the leaders of the town. But since they were more interested in warfare than civil governance, they created the Baale line (civic), to rule when they were away on military campaigns. In 1885, the Royal Niger Company became the effective rulers of the area, signing treaties with local powers such as the Olubadan, and in 1900, the British government formally assumed authority over Nigeria as a "Protectorate". The British created the Ibadan Town Council in 1897, this was the period when the system in which the Baálè (civil) and Balogun Isoriki line (military) shared powersubject to a traditional council representing both lines was established. In 1901, the Governor Sir William MacGregor introduced an ordinance whereby the Baale became the president of the council while the Resident was only to advise when necessary (Rulers of Ibadan were generally referred to as Baale until 1936, when the title of Olubadan was resuscitated).
On 1 October 1960, Nigeria gained its independence from the United Kingdom.
Following several years of planning and construction, a new palace was inaugurated in July 2024. The new palace complex sits on a six-acre expanse of land situated at Oke Aremo.
There are two ruling lines to the throne of Olubadan, Egbe Agba (civil) and Balogun (military), from where Olubadans are appointed on rotational basis to occupy the stool on the death of a monarch. The next to Olubadan and most senior on both lines are the Otun Olubadan (i.e., oba's "right hand", and #1 deputy on civil line) and Balogun (#1 deputy on warrior line), who under the Western Nigeria Law are recognised as second class traditional rulers and who are included on the Nigerian equivalent of a civil list as a result. Others are the Osi Olubadan (i.e., oba's "left hand" and #2 on civil line), Asipa Olubadan (#3 on civil line), Ekerin (literally "number 4" on civil line) and Ekarun (literally "number 5" on civil line), as well as Otun Balogun, Osi Balogun, Asipa Balogun, Ekerin and Ekarun Balogun, while the Seriki ("commerce minister" or "trade chief") and Iyalode, (i.e. mother of the town as "minister for women affairs" or "female chief") are also members of the Olubadan's privy council.
The civil line hierarchy below the Olubadan proceeds thus:
OLUBADAN 1. Otun 2. Osi 3. Ashipa 4. Ekerin 5. Ekarun 6. Abese 7. Maye 8. Ekefa 9. etc...
The eleven high chiefs that formed the Olubadan-in-council, apart from the Seriki and Iyalode, are recognised as the traditional head of each of the eleven LGs in Ibadanland. It was learned that the progenitors of Ibadan frowned on the involvement of the senior chiefs in partisan politics because of the salient neutral roles they were expected to play in their domains. For instance, they are appointed as presidents of customary courts, who are expected to adjudicate on matrimonial, land, boundary and other communal disputes.
The Olubadan has the sweeping powers to depose or peg a chief, irrespective of the person's position on the chieftaincy line. By implication, high chiefs on the lower cadre could be promoted above a high chief whose position was pegged. Even when forgiven, in the event that he was penitent, the promotion would not be reversed while the offending high chief served his punishment. For instance, during the reign of Oba Fijabi II, between 1948 and 1952, a wealthy Balogun, who was next to Olubadan, was said to have had his chieftaincy pegged. About the same time, a holder of the title of Osi-Olubadan was also hammered for acts of disloyalty to the cause of Ibadanland, an offence regarded as treasonable felony. Spirited efforts made by a former Minister in the old Western Region to seek redress from the government and the courts when his chieftaincy title was also pegged were reported to have failed. Although he was said to have been forgiven after seeking help outside the courts, his juniors who had been promoted above him were said to have remained his seniors thereafter.
In 1983, the late Olubadan, Oba Yesufu Asanike, withdrew the honorary title of Are Alasa from the then Governor of the old Oyo State, the late Chief Bola Ige, for an act considered as being disrespectful to Ibadanland.
On 7 July 2025, it was announced that the 43rd Olubadan Oba Owolabi Olakulehin, had died just two days after celebrating his 90th birthday and after just under one year on the throne. Former Oyo state governor and senator Adewolu Ladoja is set to ascend the throne as the 44th Olubadan after the customary mourning period and coronation rites. Ladoja ascends from Otun Olubadan, a post to which he was promoted in 2024 after the 43rd Olubadan was coronated.
On 21 August 2025, governor of Oyo State, Seyi Makinde, officially approved Ladoja as the 44th Olubadan-designate and slated a formal coronation ceremony for 26 September 2025 at Mapo Hall in the city.