The Turgay ([torɣai] "Tour-GUY") (also known as Torgai, Torghay or Turgai; Kazakh: Торғай, Romanised: Torğai; Russian: Тургай Romanised: Turgay) is a river in Kazakhstan.^[1] It has a length of 825 km (513 mi) and a drainage basin of 157,000 km² (61,000 sq mi).^[1]

The Naurzum Nature Reserve is a protected area located in the river basin.

The river originates at the confluence of the Zhaldama and Kara-Turgai rivers, which have their sources in the Kazakh Uplands. It then flows along the Turgay Depression. The Turgay disappears in the endorheic basin of Shalkarteniz.^[1]

The Ubagan, a tributary of the Tobol, drains the valley to the north, the Turgay to the south. There are many shallow, often salty lakes in the valley. In the summer it dries up and its water becomes salty in the lower reaches of certain sections. The river is mostly fed by snow. It freezes in November and thaws in April.^[2][3]

• List of rivers of Kazakhstan
• Lakes of the lower Turgay and Irgiz