The Northern Glass Cone is a 19th-century structure formerly used in the glass manufacturing process at Alloa Glass Works in the burgh of Alloa, the administrative centre of the central Scottish council area of Clackmannanshire. The brick-built cone is the only such structure to survive in Scotland, and is one of four in the United Kingdom: the other three are at Lemington on Tyneside, Catcliffe in South Yorkshire and Wordsley in the West Midlands.