Catherine Murray, Countess of Dysart (née Bruce, also known as Katherine; died 2nd August 1649) was a Scottish noblewoman. She was wife of William Murray, 1st Earl of Dysart and mother of Elizabeth, Duchess of Lauderdale. She was responsible for the management of Ham House during the English Civil War, defending it from the encroachment of Parliamentary forces. She was portrayed by prominent artists such as Anthony van Dyck.