Ivan-Arakhley Lake System (Russian: Ивано-Арахлейские озёра) is a group of fresh water bodies in the Chita District, Zabaykalsky Krai, Russia.

They are located within the Ivano-Arakhley State Natural Landscape Reserve (Zakaznik), a protected area of regional significance created in 1995, covering an area of 210,000 ha (520,000 acres).

[7] The lake system includes 6 large lakes with a water surface of more than 10 km2 (3.9 sq mi): Arakhley, Shaksha,[8] Irgen, Ivan, Tasei and Bolshoy Undugun.

[9][2][10][3] The system includes 20 smaller lakes with surface areas of roughly 1 km2 (0.39 sq mi) or less.

Arakhley, Shaksha, Bolshoy Undugun and Irgen are separated from them by a slight elevation and belong to the Baikal basin through the Khilok river, a tributary of the Selenga.