The International Waterway E70 is an international waterway connecting Antwerp (Belgium, Rhine-Meuse Delta coast of the North Sea) via Berlin with Klaipėda (Lithuania, coast of the Baltic Sea), serving as one of the east-west European transport routes.

It passes through the Netherlands, Germany, Poland, Russia, and Lithuania.

In Poland, the E70 route runs from the Hohensaaten Ost lock junction of the Odra River with the German Oder-Havel Canal through the Odra River section shared with E30 (Oder Waterway/ Odrzańska Droga Wodna [pl]) to Kostrzyn, where it connects with the Odra-Vistula Waterway (Droga wodna Wisła-Odra [pl]).

The project is an initiative of the participating countries and the European Union.

[1] In its White Paper on inland navigation, the United Nations Economic Commission for Europe (UNECE) points out that the missing connection of the E70 from the Twente Canal to the Mittelland Canal was abandoned after a feasibility study in 2012.