The Hindu Raj () is a mountain range in northern Pakistan, between the Hindu Kush and the Karakoram ranges. The peaks in the Hindu Raj mountains average between 5,000 and 6,000 metres in height. Its highest peak is the Koyo Zom, 6,872 m (22,546 ft).
The name "Hindu Raj" is derived from two Sanskrit words Hindà « () and RÃÂj (, ). The word Hindà « is ultimately derived from the Sanskrit word Sindhu (, ), the native name of the river Indus, and was historically used to describe the inhabitants of the Indus .
The Hindu Raj mountain range runs between Chitral and Gilgit; behind Darkot, south of the Pamir Mountains and east of the Hindu Kush. Its peaks rise to approximately 22,500 feet. The Hindu Raj mountains run largely parallel to the Hindu Kush mountains, sources disagree whether some peaks, including Buni Zom and Ghamubar Zom are in the Hindu Raj or the Hindu Kush.