Cookstown is a town in County Tyrone, Northern Ireland. It is the fourth largest town in the county and had a population of 12,546 in the 2021 census. It, along with Magherafelt and Dungannon, is one of the main towns in the Mid-Ulster council area. It was founded around 1620 when the townlands in the area were leased by an English ecclesiastical lawyer, Dr. Alan Cooke, from the Archbishop of Armagh, who had been granted the lands after the Flight of the Earls during the Plantation of Ulster. It was one of the main centres of the linen industry west of the River Bann, and until 1956, the processes of flax spinning, weaving, bleaching and beetling were carried out in the town.

County Tyrone is one of the six counties of Northern Ireland, one of the nine counties of Ulster and one of the thirty-two traditional counties of Ireland. Its county town is Omagh.