The Aller-Leine Valley is the name of a region north of Hanover in Germany, that has been created for the purpose of regional marketing and inter-community cooperation. The Aller-Leine Valley initially only included the three collective municipalities of Ahlden, Rethem an der Aller and Schwarmstedt in the district of Soltau-Fallingbostel, that are situated on the southwestern edge of the Lüneburg Heath where the River Leine discharges into the Aller. Since 2001 the neighbouring municipalities of Hambühren, Wietze and Winsen an der Aller as well as Dörverden and Kirchlinteln have become part of the Aller-Leine Valley region. The unifying theme and characteristic feature of the region is the river landscape of the Aller and Leine rivers.