The Reichsbanner Schwarz-Rot-Gold (English: "Black, Red, Gold Banner of the Reich") was an organization in Germany during the Weimar Republic, formed by members of the Social Democratic Party of Germany, the German Centre Party, and the (liberal) German Democratic Party in 1924. Its goal was to defend parliamentary democracy against internal subversion and extremism from the left and right, to teach the population to respect the new Republic, to honor its flag and the constitution. Its name is derived from the Flag of Germany adopted in 1919, the colors of which were associated with liberal parliamentary democracy and the republic.

Das Reichsbanner Schwarz-Rot-Gold, Bund deutscher Kriegsteilnehmer und Republikaner, kurz Reichsbanner, war ein überparteiliches, in der Praxis von Sozialdemokraten dominiertes Bündnis in der Weimarer Zeit zum Schutz der Republik gegen ihre Feinde an den politischen Rändern.

Reichsbanner Schwarz-Rot-Gold, Bund deutscher Kriegsteilnehmer und Republikaner («riksbanner sort-rød-gull, forbundet av tyske krigsdeltagere og republikanere», kort: Reichsbanner) var en sammenslutning av krefter fra flere sentrumsnære politiske partier under Weimarrepublikkens tid, til beskyttelse av den liberale republikken mot dens fiender på høyre- og venstresiden.