The Left Bank of the Rhine (German: Linkes Rheinufer, French: Rive gauche du Rhin) was the region north of Lauterbourg that is now in western Germany and was conquered during the War of the First Coalition and annexed by the First French Republic.
After the French attempt to create a Cisrhenian Republic had foundered, the territories west of the Rhine were reorganised into several French Departments. After the allied victory over Napoleon I in 1814, the territories were temporarily administered by the Central Administrative Departement (Zentralverwaltungsdepartement). The Sarre province and the district of Landau in der Pfalz, which had been French before the Napoleonic Wars, became by the final act of the Congress of Vienna ceded to the members of the anti-Napoleonic coalition. The annexations done under the First Republic were undone. From those territories, the Bavarian Circle of the Rhine (Rheinkreis) and the Hessian province of Rhenish Hesse (Rheinhessen) were formed in 1816.