Dunans Castle is a historic structure located in Glendaruel, on the Cowal peninsula, Argyll and Bute, Scotland. A property at Dounens was shown on maps in 1590; Dunans House was elaborated into its present mock castle form in 1864. Once part of a much larger estate the property presently includes 16 acres (65,000 m2) of ground and in 2001, was ruined by fire.