General Hendrik Balzazar Klopper (also Balthazar), DSO was a South African military commander. He commanded the 3rd Infantry Brigade and was later promoted to command the 2nd Infantry Division during the Western Desert Campaign of the Second World War. He is best known for surrendering the Division to Rommel after the failed defence of the Tobruk harbour in June 1942. After the war, he became Army Chief of Staff from 1950 to 1953, and Commandant General of the Union Defence Force from 1956 until his retirement in 1958.