Mount Qasioun (Arabic: جَبَل قَاسِيُون, romanized: Jabal Qāsiyūn) is a mountain overlooking the city of Damascus, Syria.

[2] The term Qasioun might mean "hard and dry" in Syriac language, which is the characteristic of the bare rocky mountain that has no grass, greenery, or water.

It is mentioned however in Medieval Arab history books as having been the place where Cain killed Abel.

[11][12] It was known for hundreds of years as a place where prayers were immediately accepted, and especially in times of drought rulers of Damascus would climb to the cave and pray for rain.

[13] At present, the cave has been concealed by surrounding houses, but that spot is called al-Juyūˁīyah (Roughly 'the Place of the Hungry').