Fernie Castle is an enlarged sixteenth-century tower house in north-east Fife, Scotland.
Situated just east of the village of Letham, it was originally in an L-plan layout. However, the house has been much altered and extended since, notably additions made in the Scottish baronial style in the nineteenth century.
It currently operates as a hotel.
Coordinates: 56°19′14″N 3°06′27″W / 56.32056°N 3.10750°W