Fotheringhay Castle (also Fotheringay Castle) was in the village of Fotheringhay to the north of the market town of Oundle, Northamptonshire (). It was probably founded around 1100 by Simon de Senlis, Earl of Northampton. In 1113, possession passed to Prince David of Scotland when he married Simon's widow. The castle then descended with the Scottish princes until the early 13th century when it was confiscated by King John of England.