Kyzyltas (Kazakh: Қызылтас) is a range of mountains in Aktogay District, Karaganda Region, Kazakhstan.

The slightly higher Kyzylarai massif rises to the southeast and the Karkaraly and Kent mountain ranges lie to the northeast.

The Nura river has its sources in the range and flows northwards and then westwards into Lake Tengiz.

Other rivers originating in the range are the Zhamshi, Zharly and Tokrau; the latter flows southwards towards Lake Balkhash, but its waters get lost in the semidesert sands.

[2][4][3] Vegetation on the range is sparse, only some of the slopes and valleys have tree growth, including birch, aspen and willow.