Mount Qasioun is a mountain overlooking the city of Damascus, Syria. It has a range of restaurants, from which the whole city can be viewed. As the city has expanded over the years, some districts have been established on the foot of the mountain. Its highest point is 1151m.
The mountain has been heavily entrenched with Syrian government forces since the start of the Syrian Civil War.
The mountain is also host to an endemic species of iris, Iris damascena, which can be found on the steep eastern slopes, at an altitude of 1200m above sea level. The Syrian government has not given the species any protected status. Its only benefiting factor was that part of the habitat of the species occurs in a military area near the 'Qassioun Republican Guards Military Base' and other military facilities, which stops civilians accessing the area. The base and steepness of the habitat also stops construction or development, but it is still classed as Critically endangered.