This article examines sixteenth- and seventeenth-century Ottoman sources for the Funj sultanate that ruled the Gezira and Nile Valley regions of the modern Sudan. It also aims to elucidate the relationship between the Ottoman empire and the Funj sultanate. In the first part of the article, the sixteenth-century Ottoman sources, largely documents from the Ottoman archives in Istanbul, are translated and analysed. In the second part, two seventeenth-century Ottoman accounts of the Funj are examined: that by the famous Ottoman traveller Evliya Çelebi, and that by the geographer Abu Bekr el-Dimaşki. The text of the relevant passage from Dimaşki's work is provided alongside a translation. The article also examines evidence for religious links between the Ottomans and the Funj.