Fingask Castle is a country house in Perth and Kinross, Scotland. It is perched 200 feet (61 m) above Rait, three miles (5 km) north-east of Errol, in the Braes of the Carse, on the fringes of the Sidlaw Hills. Thus it overlooks both the Carse of Gowrie and the Firth of Tay and beyond into the Kingdom of Fife. The name derives from Gaelic fionn-gasg: a white or light-coloured appendage.^{[citation needed]}

Fingask was once an explicitly holy place, a convenient and numinous stop-off between the abbeys at Falkirk and Scone. It was later held by the Bruce family, and then by the Threiplands. In the eighteenth century it was owned by Jacobites and was forfeited. The castle is a Category B listed building, and the estate is included on the Inventory of Historic Gardens and Designed Landscapes, the national register of significant gardens.

There are mentions of the lands of Fingask in the Foundation Charter of the Abbey of Scone by Alexander I. The date of the charter is said to be 1114 or 1115. The Bruce family owned the lands of Rait, including Fingask, from the 15th century. The Bruces were descended from the senior line of the Bruces of Clackmannan, which included Sir David Bruce who married Janet, daughter of Sir William Stirling of Keir. Their son, Robert Bruce held charter of Rate (Rait) in 1484, confirmed 1488, and his son David resigned his right to Clackmannan to his uncle in February 1506/7. At the time when Patrick Bruce was laird, a stone was set into the house showing the date 1594. A tombstone near the ruined church of Rait reveals:

"Here lies Jonet Gibsone, spouse to William Bruce
Laird of Fingask who bore him ... children
Whereof five males was left behind her, who
Lived together the space of 18 yeers
And of her age the space of 33 yeers
She died the last of Aprule Ano. Domi. 1647."

Around 1660 the mercat cross (market cross) from nearby Perth was relocated to the grounds of Fingask.

The last of the Bruce lairds of Fingask was Laurence Bruce, whose "pecuniary involvements necessitated the sale of the estate for the behoof of his creditors in the year 1671".

In 1672 Patrick Threipland purchased the estate, which was erected into a barony the same year. He renovated the building and laid out the gardens, and in 1674 he added the neighbouring Braes of the Carse tower house and estate of Kinnaird to his realm. The same year he was knighted for his diligence in the suppression of conventiclers, and in 1687 he was created a baronet of Nova Scotia, although he died a prisoner at Stirling Castle for adherence to the ousted King James VII, in 1689.

His son David, 2nd Baronet, (c.1670–1746) joined the Jacobite rising of 1715, and fought with the Earl of Mar against the government at the Battle of Sheriffmuir. When the rising failed, the baronetcy was attainted by act of parliament and Fingask and its estate was forfeited. Fingask was purchased for £9,606 6s 4.5d by the York Buildings Company, an English waterworks company which had begun to specialise in forfeited land. The company held the property until 1783, meanwhile leasing it to Dame Katherine (Kattrin) Threipland, "the lass of Gowrie" (d. 18 March 1762), daughter of the 2nd baronet.