Shahtoosh (also written shahtush, a Persian word meaning "king of fine wools") is the name given to a specific kind of shawl, which is woven with the down hair of the Tibetan antelope (chiru), by the weavers of Kashmir.

These shawls were originally very few and it took very skilled artisans to weave the delicate hair (which measured between 9 and 11 micrometres). These factors made shahtoosh shawls very precious. Shahtoosh are so fine that an average size shawl can be passed through a wedding ring, leading to them also being known as 'ring shawls.'