Øresundståg is a passenger train network operated by DSB Øresund and Transdev in the transnational Øresund Region of Denmark and Sweden.

The name is a hybrid of the Danish Øresundstog and the Swedish Öresundståg, both meaning "Øresund train". The rolling stock, also known as Class ET in Denmark and X31K or X32K in Sweden, are electric passenger trainsets in the Flexliner family.