Meinersen is a municipality located in the district of Gifhorn within the state of Lower Saxony, Germany. It is situated between the rivers Oker and Aller, approximately 12 km west of the town of Gifhorn and 25 km southeast of Celle.
The municipality comprises several villages, including Ahnsen, Böckelse, Hardesse, Höfen, Hünenberg, Meinersen, Ohof, Päse, Seershausen, Siedersdamm, and Warmse.