Kellie Castle is a castle just outside Arncroach, about 5 kilometres north of Pittenweem in the East Neuk of Fife, Scotland.
The earliest records of Kellie go back to 1150 where it is mentioned in a charter issued by King David I. The first known owner was Robert of London, the illegitimate son of King William the Lion. By 1266 Kellie had passed to the Siward family, who had hailed from Northumbria and had assisted King Malcolm Canmore to overthrow Macbeth. The estate was signed over to a Siward relative, Walter Oliphant, in 1360 and the castle remained in the ownership of the Oliphant family until 1613. It was purchased by Sir Thomas Erskine, who had saved the life of King James VI during the Gowrie Conspiracy by killing Sir Alexander Ruthven. The King stayed at Kellie in 1617 during his only visit to Scotland after the Union of the Crowns, and he appointed Erskine as Earl of Kellie in 1619.
It is likely that the ceiling of what is now the library in the 1573 east tower was decorated in plaster in anticipation of a Royal visit by King James. This room may be the first in Scotland where plaster decoration was used ‘in the London style’ in preference to the painted beams and boarded ceilings that were generally fashionable in the early 17th century. Incorporated in the ceiling is the date "1617" and monogram "T V F" for Thomas Viscount Fenton,which title the King awarded Thomas Erskine in 1606.
Originally a simple tower house, the lower section of what now constitutes the northwest tower is the oldest part of the castle, dating from around 1360, and is said to be haunted. In 1573 a new tower was built by the 4th Lord Oliphant to the east of the original tower. Between 1573 and 1606 the two towers were linked by a new range, terminated by another tower in the south-west, creating the T-plan layout that remains today. The castle is a fine example of Scots Baronial domestic architecture, with an imposing mix of gables, corbelled towers, and chimneys.