The Reichstag of the German Empire was Germany's lower House of Parliament from 1871 to 1918. Within the governmental structure of the Reich, it represented the national and democratic element alongside the federalism of the Bundesrat and the monarchic and bureaucratic element of the executive, embodied in the Reich chancellor. Together with the Bundesrat, the Reichstag had legislative power and shared in decision-making on the budget. It also had certain rights of control over the executive branch and could engage the public through its debates. The emperor had little political power, and over time the position of the Reichstag strengthened with respect to both the imperial government and the Bundesrat.

The German Empire, also referred to as Imperial Germany, the Second Reich or simply Germany, was the period of the German Reich from the unification of Germany in 1871 until the November Revolution in 1918, when the German Reich changed its form of government from a monarchy to a republic.