The Tomb of Suleyman Shah (Turkish: Süleyman Şah Türbesi) is a series of sites (all geographically situated in Aleppo Governorate, Syria), which housed the relics of Suleyman Shah, grandfather of Osman I, the founder of the Ottoman Empire. Suleyman Shah is believed to have drowned in the Euphrates river in modern-day Syria and an Ottoman tomb in or near Qal'at Ja'bar has been associated with him.