Engerdal is a municipality in Hedmark county, Norway. It is part of the traditional region of Østerdalen. The administrative centre of the municipality is the village of Engerdal. The new municipality of Engerdal was created on 1 January 1911 from parts of the municipalities of Tolga, Trysil, Ytre Rendal, and Øvre Rendal.
The first element is the river name Engera and the last element is dal, the word for "valley" or "dale". The river name is derived from the name of the lake Engeren, and this is probably derived from the Old Norse word ongr which means "narrow".The coat-of-arms is from modern times. They were granted on 8 February 1991. The arms show two pieces of a horse harness (the hames) in gold on a green background. The two objects symbolize the ties between horse and man and at the same Time the connection between work and recreation.