Oldendorf is a former Samtgemeinde ("collective municipality") in the district of Stade, in Lower Saxony, Germany. Its seat was in the village Oldendorf. It was disbanded on 1 January 2014, when it was merged with the Samtgemeinde Himmelpforten to form the new Samtgemeinde Oldendorf-Himmelpforten. The Samtgemeinde Oldendorf consisted of the following municipalities: Burweg Estorf Heinbockel Kranenburg Oldendorf Former Samtgemeinden in Lower Saxony