The Occupation of the Ruhr (German: Ruhrbesetzung) was a period of military occupation of the Ruhr region of Germany by France and Belgium between 11 January 1923 and 25 August 1925.

France and Belgium occupied the heavily industrialized Ruhr Valley in response to Germany defaulting on reparation payments dictated by the victorious powers after World War I in the Treaty of Versailles. Occupation of the Ruhr worsened the economic crisis in Germany, and German civilians engaged in acts of passive resistance and civil disobedience, during which 130 were killed. France and Belgium, facing economic and international pressure, accepted the Dawes Plan to restructure Germany's payment of war reparations in 1924 and withdrew their troops from the Ruhr by August 1925.

The Occupation of the Ruhr contributed to German rearmament and the growth of radical right-wing movements in Germany.