Irgiz Ыргыз / Иргиз
Mouth location in Kazakhstan
Location
Country	Kazakhstan
Physical characteristics
Source	Mugodzhar Hills
• elevation	328 m (1,076 ft)
Mouth	Turgay
• coordinates	48°15′28″N 62°01′20″E / 48.2579°N 62.0222°E / 48.2579; 62.0222
Length	593 km (368 mi)
Basin size	31,600 km2 (12,200 sq mi)
Basin features
Progression	Turgay → Shalkarteniz

The Irgiz (Kazakh: Ыргыз Yrgyz; Russian: Иргиз) is a river in Aktobe and Kostanay regions of Kazakhstan, a right tributary of the Turgay. It is 593 kilometres (368 mi) long, and has a drainage basin of 31,600 square kilometres (12,200 sq mi).^[1] It was the site of the Irghiz River skirmish in the early 13th century.

The Irgiz rises on the eastern slopes of the Mugodzhar Hills in the Aktobe region of Kazakhstan. It flows in a predominantly southerly direction to its confluence with the Turgay. Its main tributary is the 178 km (111 mi) long Chet-Irgiz (Шет-Иргиз) from the right.^[2]

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