Skandinavisk Aero Industri A-S (abbreviated SAI) was a Danish manufacturer of aeroplanes that existed between 1937 and 1954. The company was founded by technician Viggo Kramme (1905–1984) and engineer Karl Gustav Zeuthen (1909–1989) and based in Copenhagen. The company's aeroplanes were labelled KZ for Kramme and Zeuthen the first being the KZ I from 1937. The KZ IV was built as an ambulance plane for Zone-Redningskorpset and introduced in 1944.
