The University of Aberdeen is a public research university in Aberdeen, Scotland. It was founded in 1495 when William Elphinstone, Bishop of Aberdeen and Chancellor of Scotland, petitioned Pope Alexander VI on behalf of James IV, King of Scots to establish King's College, making it one of Scotland's four ancient universities and the fifth-oldest university in the English-speaking world. Along with the universities of St Andrews, Glasgow, and Edinburgh, the university was part of the Scottish Enlightenment during the 18th century.

King's College in Old Aberdeen, Scotland, the full title of which is The University and King's College of Aberdeen, is a formerly independent university founded in 1495 and now an integral part of the University of Aberdeen. Its historic buildings are the centrepiece of the University of Aberdeen's Old Aberdeen campus, often known as the King's or King's College campus.