Tilquhillie Castle is a castle near Banchory in Aberdeenshire, Scotland. It is a Category A listed building.
The castle formerly formed part of the lands of Arbroath Abbey. The castle was built in 1576 by John Douglas of Tilquhillie and his wife Gelis Erskine, a daughter of John Erskine of Dun.
The Historic Environment Scotland listed-building report from 1972 described the castle as follows:
The castle was subsequently restored with modern amenities. The novelist and travel writer Norman Douglas spent part of his childhood at Tilquhillie Castle, the home of his paternal ancestors.