Sources: Ottoman administrative records for Budin Eyalet; accounts of mosques, madrasas, baths, and dervish lodges in Ottoman Hungary; studies of frontier Islam in the sixteenth and seventeenth centuries.

Ottoman Hanafi Islam in Hungary refers to the official Sunni legal and institutional form carried into central Hungary after the Ottoman capture of Buda in 1541. It was not a separate world religion, but a regional frontier expression of Ottoman Sunni practice shaped by garrison towns, administrators, soldiers, judges, scholars, merchants, and Sufi networks. The Hanafi school supplied the legal framework for courts, endowments, mosque administration, taxation disputes, family law, and relations with Christian and other protected communities under Ottoman rule. Buda, Pecs, Eger, and other towns gained mosques, minarets, baths, schools, and charitable foundations. Major topics include the Budin Eyalet, Hanafi jurisprudence, Ottoman urban institutions, dervish presence, frontier warfare, coexistence and hierarchy, conversion patterns, imperial patronage, and the sharp decline of Islamic institutions after Habsburg reconquest in the late seventeenth century.