Brigadier General Dwight Frederick Johns (16 May 1894 – 8 November 1977) was an American soldier and general in the first half of the 20th century. He is best known for his service in the South West Pacific Area during World War II, where he headed the Advance Base and the Combined Operations Service Command during the Kokoda Track campaign and the Battle of Buna-Gona. He later commanded the Advance Base at Lae and Finschhafen, and the Engineer School at Fort Belvoir. After the war he headed the Pacific Engineer Division, where he was responsible for a number of important flood control and irrigation projects.