This article lists the rulers of Tyrconnell (Irish: TÃÂr ÃÂonañll), a medieval Irish kingdom which covered much of what is now County Donegal.
It was founded in the fifth century by a son of Niall of the Nine Hostages, Conall Gulban, of whom the Cenél Conaill are descended. They ruled the kingdom until the Flight of the Earls in September 1607, which marked the end of the kingdom.
O'Donnell clan chiefs were inaugurated with a traditional ceremony. Under brehon law, the title of clan chief could only be transferred by abdication or the death of the current clan chief. Despite this, many of the following individuals took power by force by imprisoning or overpowering the current clan chief, effectively becoming the ruler of Tyrconnell.