Horston Castle (sometimes spelt Horeston and also known as Horsley Castle)[1] is about 1 mile to the south of the village of Horsley, some 5 miles north of the English city of Derby (grid reference SK375432).

The site is a Scheduled Ancient Monument but, as of 2018, is on Historic England's Heritage at Risk Register as poor condition.

[2] It was a Norman motte and bailey castle which was founded by Ralph de Buron.

In the 13th century King John built a stone castle, adding a keep, a chapel, a gatehouse and a barbican.

In 1514 it was granted by Henry VIII to the Duke of Norfolk as a reward for services against the Scots.