|Time zone||UTC + 8 (UTC+8)|
Galt (Mongolian: Галт, lit. "with fire") is a sum of Khövsgöl aimag. The area is about 3,600 km². In 2000, the sum had 5328 inhabitants. The center, officially named Ider (Mongolian: Идэр), is located 168 km south of Mörön and 837 kilometers from Ulaanbaatar.
The Galt sum was founded, under the name Ider and as part of Arkhangai aimag, in 1931. In 1933, it had about 2,500 inhabitants in 687 households, and about 72,000 heads of livestock. In 1942, it became part of Khövsgöl aimag, in 1956 it was joined to Chandmani sum, in 1959 it was reestablished under the name Galt. In 1963, the Zürkh sum became part of Galt. Between 1956 and around 1990, Galt was the seat of the Ideriin Undraa negdel.
About 25 km south of the sum center is a warm spring known as Salbartyn Rashaan.
M.Nyamaa, Khövsgöl aimgiin lavlakh toli, Ulaanbaatar 2001, p. 45f