Glåmdalen[1] (or Glommadal) is a valley in Innlandet county in Eastern Norway.

The name "Glåmdalen" is also a newer designation for the traditional district which lies around the river Glomma, although it is most often used to refer to the southern part of the broader valley of Østerdalen.

From Elverum south to Kongsvinger Municipality, the valley and region is referred to as Solør.

As in turns westerly from Kongsvinger until it gets to Nes Municipality in the traditional district of Romerike in Akershus county, it is called the Odalen valley.

The newer term "Glåmdalen" is often used for the Solør and Odalen areas together, while the northern part of the valley is usually referred to as Østerdalen.