Major General Charles Sumner Lund Hertzberg CB, MC, VD (12 June 1886 – 10 January 1944) was a prominent engineer and senior commander in the Canadian Army during the Second World War. Hertzberg commanded the Royal Canadian Engineering Corps as Chief Engineer, First Canadian Army. He was appointed Companion of the Order of the Bath, and died at age 57 after contracting smallpox on a special assignment in India.