Elmsley is a surname. Notable people with the surname include: Alex Elmsley (1929–2006), British Magician and Computer programmer James H. Elmsley (1895–1921), Canadian Major General, Commander of the Canadian Siberian Expeditionary Force John Elmsley, Chief Justice of Upper Canada (17961802) and Chief Justice of Lower Canada (18021805) Peter Elmsley (1773–1825), English classical scholar Peter Elmsley (bookseller) Elmsley or Elmsly (born 1736), bookseller from Aberdeenshire See also Drummond/North Elmsley, township in eastern Ontario, Canada in Lanark County Elmsley House, the official residence of the Lieutenant Governor of Upper Canada and Ontario, Canada South Elmsley Township, Ontario, township located within Leeds and Grenville United Counties in Eastern Ontario, Canada Helmsley