Bayenthal (German: Köln-Bayenthal) is a neighbourhood of Cologne, Germany and part of the district of Rodenkirchen. Bayenthal lies on the left bank of the river Rhine, between the district of Innenstadt to the North and Marienburg neighbourhood to the South. The borders to these are defined by the Southern Bridge (Südbrücke) and the Bayenthalgürtel of the Cologne Belt respectively.