Castle Craig is a private residential drug and alcohol rehabilitation centre.

Castle Craig is an 18th-century country house set in 50 acres (20 ha) of private parkland near the village of Blyth Bridge, around 20 miles (32 km) south of Edinburgh.

The estate is first recorded in 1170 when it was conferred, as part of the parish of Kirkurd, to Bishop Engelram of Glasgow by Pope Alexander III.

[1] The present Castle Craig was built in 1798 by Sir John Gibson-Carmichael (1773–1803),[2] a relative of the Earl of Hyndford.

[2] Rehabilitation treatment at Castle Craig is based upon the 12-step abstinence-based model of care which recognises addiction as a disease and abstinence from all drugs is essential for long-lasting recovery.