Frankfurt (Oder) or Frankfurt an der Oder (; abbreviated "", Polish: "Frankfurt nad Odrą", Low Sorbian: "Frankobrod nad Odru", Low German: "Frankfort an de Oder", Upper Sorbian: "Frankobrod nad Wódru", lit. 'Frankfurt at the Oder') is a town in Germany. It lies on the Oder river, which marks the current border between Germany and Poland (The so-called Oder-Neisse line). It's in the east of the state of Brandenburg.