The Convention of Artlenburg or Elbkonvention was the surrender of the Electorate of Hanover to Napoleon's army, signed at Artlenburg on 5 July 1803 by Oberbefehlshaber Johann Ludwig von Wallmoden-Gimborn.
Horse-drawn carts brought the salt from Lüneburg to a crossing of the Elbe river at Artlenburg (near Lauenburg) and from there, via Mölln, to Lübeck.