Ideriin Gol (Идэрийн гол)
Ider River
River
Ideriin Gol near Jargalant, Khövsgöl
Name origin: Mongolian: Идэр, ider = young, youthful
Country	Mongolia
Aimags	Zavkhan, Khövsgöl
Tributaries
- right	Chuluut River
Source
- location	Khangai Mountains
Mouth	Selenge
- location	Olon golyn bilchir
- coordinates	49°15′40″N 100°40′45″E / 49.26111°N 100.67917°E / 49.26111; 100.67917
Length	452 km (281 mi)
Basin	24,555 km2 (9,481 sq mi)
Discharge
- average	57 m3/s (2,013 cu ft/s)

The Ideriin gol (Mongolian: Идэрийн гол) is a river in the Khövsgöl and Zavkhan aimags in northwestern Mongolia and is, together with the Delgermörön river, one of the sources of the Selenge river. The source is in the Khangai range, the confluence with the Delgermörön is in Tömörbulag sum. The Ider river is frozen 170-180 nights per year. There is a wooden bridge in Jargalant and a concrete bridge in Galt.