Allerton Castle, formerly "Allerton Park" is a Grade I listed nineteenth-century Gothic or Victorian Gothic house at Allerton Mauleverer in North Yorkshire, England. It was rebuilt by George Martin in 1843-53.
It is ten miles (16 km) east of Harrogate and just east of the A1, at its junction with the A59 York-Knaresborough road and a late 20th-century block used for education and corporate functions.
Outside is St Martin's Church.
The Allerton estate belonged to the Mauleverer family from the time of the Norman Conquest. The nearby church of St Martin contains several tomb-monuments to them. When Richard Mauleverer died heirless in 1692, Allerton passed to his wife, who left the estate to Richard Arundell, her son by her second marriage.
Arundell rebuilt the house in the 1740s, and in 1745 remodelled the church in Norman revival style. The mid-18th century interior of the church remains unaltered to this day.
Following Richard Arundell's death in 1758, Allerton passed to Viscount Galway, whose son sold it in 1786 to Prince Frederick, Duke of York, second son of George III and brother of George IV.
Prince Frederick rebuilt the house to designs by Henry Holland, but sold the estate shortly afterwards in 1789.