The Tuman Monastery (Serbian: Манастир Туман, romanized: Manastir Tuman) is a 14th-century Orthodox monastery in eastern Serbia, in the municipality of Golubac. It belongs to the Serbian Orthodox Eparchy of Braničevo. It is also referred to as the Tumane Monastery. The church is dedicated to the Saint Archangel Gabriel. As of 2018, the monastery has six monks and one nun, which makes it the largest one in the Braničevo District. Because of the several historical healers who dwelled in the monastery, Tuman has been called "Ostrog of the Đerdap".