Eystrup was a Samtgemeinde ("collective municipality") in the district of Nienburg, in Lower Saxony, Germany. Its seat was in the village Eystrup. On 1 January 2011, it merged with the Samtgemeinde Grafschaft Hoya. The Samtgemeinde Eystrup consisted of the following municipalities: Eystrup Gandesbergen Hämelhausen Hassel Former Samtgemeinden in Lower Saxony