The Trebnitz–Leipzig railway is a double track electrified main line in the German states of Saxony-Anhalt and Saxony built and originally operated by the Berlin-Anhalt Railway Company. It formally starts at Trebnitz on the former border between the Duchy of Anhalt and Prussia and runs via Dessau and Delitzsch to Leipzig. The section from Bitterfeld to Leipzig is part of Line 1 of the Trans-European Transport Networks (TEN-T). Until 1871, the Zerbst–Roßlau section was called the Anhaltische Leopoldsbahn (Anhalt Leopold's railway).