The siege of Buda ended with the capture of the city of Buda, the historical capital of the Kingdom of Hungary, by the Ottoman Empire, leading to about 150 years of Ottoman rule in parts of Hungary. The siege, part of the Little War in Hungary, was one of the most important Ottoman victories over the Habsburg monarchy during Ottoman–Habsburg wars in Hungary and the Balkans.

Ottoman Hungary encompassed those parts of the Kingdom of Hungary which were under the rule of the Ottoman Empire from the occupation of Buda in 1541 for more than 150 years, until the liberation of the area under Habsburg leadership (1686–1699). The territory was incorporated into the empire, under the name Macaristan. For most of its duration, Ottoman Hungary covered Southern Transdanubia and almost the entire region of the Great Hungarian Plain.