Osten (IPA: [], N. Low Saxon: Oosten) is a municipality in the district of Cuxhaven, in Lower Saxony, Germany. It is situated on the river Oste. Osten also means "East" in German.

Eysteinn (Swedish: Östen; died ca 600) was the son of Eadgils and Yrsa of Saxony. He was the father of Ingvar. The Eysteinn tumulus (Östens hög) in Västerås near Östanbro has been linked to King Eysteinn by some popular historians. The term Hög is derived from the Old Norse word haugr meaning mound or barrow.