Sia Airfield, also known as Kiriwina North Drome, was an airfield built on the northern end of Kiriwina Island during the Second World War. It was built by the No. 6 Airfield Construction Squadron RAAF in August 1943 but mainly used by the United States Army Air Forces. The airfield ran roughly northwest to southeast with a taxiway and revetments on each side of the airfield.