Ostrozub (Serbian Cyrillic: Острозуб) is a mountain in southern Serbia, near the town of Crna Trava. It forms a continuous range with Čemernik mountain. Its highest peak Ostrozupska čuka has an elevation of 1,546 meters above sea level.

Ostrozub
View to the Ostrozub village
Highest point
Elevation	1,546 m (5,072 ft)[1]
Coordinates	42°52′56″N 22°14′51″E / 42.88222°N 22.24750°E / 42.88222; 22.24750
Geography
Ostrozub Location in Serbia
Location	Southeastern Serbia
Parent range	Rhodopes

The eponymous village (42°52′00″N 022°14′00″E / 42.86667°N 22.23333°E / 42.86667; 22.23333^[2]) on the mountain is depopulated. According to the 2002 census, it had a population of 1.