Rashleigh is a surname of a prominent family from Devon and Cornwall in England, which originated in the 14th century or before at the estate of Rashleigh in the parish of Wembworthy, Devon. The principal branches were: * Rashleigh of Rashleigh, Devon * Rashleigh of Barnstaple, North Devon * Rashleigh of South Molton, North Devon * Rashleigh of Fowey, Cornwall * Rashleigh of Menabilly, Tywardreath, near Fowey * Rashleigh of Coombe, Fowey