Bavarian nationalism is a point of view that asserts that Bavarians are a nation and promotes the cultural unity of Bavarians. It has been a strong phenomenon since the incorporation of Bavaria into the state of Germany in 1871. Bavarian nationalists find the terms that Bavaria entered into Germany in 1871 to be controversial and claimed that the German government has long intruded the desired autonomy of Bavaria, and calls have been made for independence of Bavaria.
After the defeat of Germany in World War I, Bavarian nationalism grew in strength, becoming popular amongst both revolutionary and reactionary political movements. Following the collapse of Austria-Hungary after World War I, proposals for Austria to join Bavaria were made. At this time the Bavarian government held particular interest in incorporating the regions of North Tyrol and Upper Austria into Bavaria. This was a serious issue in the aftermath of World War I with significant numbers of Austria's North Tyrolese declaring their intention to have North Tyrol join Bavaria.
The origins of the rise of Bavarian nationalism as a strong political movement were in the Austro-Prussian War and its aftermath. Bavaria was politically and culturally closer to Catholic Austria than Protestant Prussia and the Bavarians shared with the Austrians a common contempt towards the Prussians, leading Bavaria to ally with Austria in the war. Austria along with Bavaria and its other allies were defeated by Prussia and its allies. In the aftermath Bavaria paid a large indemnity to Prussia and joined the Prussian-founded German Empire in 1871. After unification with Germany in 1871, Bavarian nationalists were adamantly opposed to the Prussian-domination of the German state and refused further integration into the German Empire.