The Lower Saxon Landtag or the Parliament of Lower Saxony is the state diet of the German state of Lower Saxony. It convenes in Hanover and currently consists of 146 members, consisting of four parties. Since 2022 the majority is a coalition of the Social Democratic Party and the Greens, supporting the cabinet of Minister-President Stephan Weil (SPD).

Lower Saxony is a German state in northwestern Germany. It is the second-largest state by land area, with 47,614 km2 (18,384 sq mi), and fourth-largest in population among the 16 Länder federated as the Federal Republic of Germany. In rural areas, Northern Low Saxon and Saterland Frisian are still spoken, albeit in declining numbers.