Kinnairdy Castle is a tower house, having five storeys and a garret, two miles south of Aberchirder, Aberdeenshire, Scotland.

[1] Subsequently it came to the Reverend John Gregory in 1647, then passed to his brother David, a doctor who has been claimed to be the constructor of the first barometer.

[5] The property was sold by his third son to Thomas Donaldson, a merchant from Elgin, who restored and re-roofed the castle during the eighteenth century,[1] transforming it into a country house.

[1] Thomas Innes of Learney, Lord Lyon King of Arms, introduced some of the heraldic decoration in the house, which he owned after the Second World War.

[1] There is a courtyard to the south and east formed by outbuildings and curtain walls; to the north and west, there are steep banks.