Hacı Sinan Ağa (d. Ramadan 1049/1639-1640) was a wealthy merchant living in 17th-century Sarajevo, the founder of and figure buried in the courtyard tomb of the Hadži-Sinan (Silahdar Mustafa Pasha) Lodge, one of the centers of the Qadiriyya in the Balkans (TDV, "Sarajevo"; BiH National Monuments Commission, designation #2534, 2005). The lodge was built in 1638-1640 by him or his son, silahdar Mustafa Pasha, using the architect Kasım Ağa, after Murad IV's conquest of Baghdad (1638). Hacı Sinan Ağa died before the lodge was completed and was buried in the courtyard tomb with his wife Sakine. Sources describe him as the pious founder-benefactor of the lodge rather than as an order sheikh (noted transparently).