The Chemnitz–Riesa railway is a two-track and electrified mainline railway in the German state of Saxony, originally built and operated by the Chemnitz-Riesa Railway Company. The line was opened between 1847 and 1852 and is one of the oldest railways in Germany. The line runs from Riesa via Döbeln to Chemnitz and is part of the Berlin–Chemnitz route.