The ALn 772 (Automotrice Leggera a nafta, Light Diesel motor car) series are a group of Diesel railcars built for the Italian public railway company Ferrovie dello Stato (FS) between the 1930s and the 1950s. As the first project in Italy to abandon the automobile-derived design and adopt a comprehensive "rolling stock" approach, it represents the link between the simple and sturdy Littorine and the modern Diesel units.