Ostheide is a Samtgemeinde ("collective municipality") in the district of Lüneburg, in Lower Saxony, Germany. It is situated approximately 8km east of Lüneburg. Its seat is in the village Barendorf.Division of the municipalityThe Samtgemeinde Ostheide consists of the following municipalities: Barendorf Neetze Reinstorf Thomasburg Vastorf Wendisch Evern