Kupfergraben is the name given to the 400-metre-long northern part of the canal-like left arm of the Spree, the Spreekanal, along the Museum Island (Museumsinsel) from the Eiserne Bridge (Eiserne Brücke) to the Spree at kilometre 16.31[1] in Berlin's Mitte district. The Spreekanal (SpK) with a length of two kilometres[1] belongs to the federal waterway Spree-Oder-Wasserstraße,[2] for which the Wasser- und Schifffahrtsamt Berlin is responsible.
Am Kupfergraben is the name of a street running parallel on the west bank of the Kupfergraben, which is opposite the Museum Island (Museumsinsel).