Janatas (Kazakh: Жаңатас, Zhaŋatas, Russian: Жанатас) is a town in Sarysu District of Jambyl Region of southern Kazakhstan. The name means "New stone" in Kazakh, referring to the newly found phosphorite deposits. Janatas serves as the administrative center of the district. Population: 20,731 (2009 Census results); 25,927 (1999 Census results).

The town lies north of the Karatau slopes, by the banks of the Burkittі (Бүркітті) river, a left tributary of the Shabakty. Saudakent village is located 25 kilometers (16 mi) to the northeast.

Janatas was founded in 1964 as a settlement to serve the phosphorite deposits. In 1969, it was granted town status.

The town was steadily growing until the 1990s, when most industrial enterprises closed down owing to economic hardships, and population started to decline. As of 2013, some of residential areas stand deserted.

As of 2013, the only functioning industrial enterprise in the town is the phosphorite factory.

Janatas is connected by railway with Taraz. There is no passenger service.

There is road access to E40 and further to Taraz and Shymkent.