Keyham is a Victorian-built area of Plymouth in the English county of Devon. It was built to provide dense cheap housing just outside the wall of HM Dockyard Devonport for the thousands of civilian workmen. In the early-19th century, Devonport Dockyard was smaller than now; it was enlarged mid-century by Keyham Steam Yard - Keyham at that period was a suburb of Devonport itself.