Norddal is a municipality in Møre og Romsdal county, Norway. It covers the easternmost part of the Sunnmøre region along the border with Oppland county. The municipal center of the municipality is the village of Sylte in Valldal.Norddal covers an area with several distinct valleys and villages: Eidsdal and Norddal (Dalsbygda) in the south; Tafjord in the east; and Fjørå/Selboskarbygda and Sylte in the Valldal valley in the north. The Norwegian National Road 63 traverses the municipality from south to north.
Norddal was established as a municipality on 1 January 1838 (see formannskapsdistrikt). Historically, the district of Sunnylven was part of Norddal, but it was created as a separate municipality in 1838.The Old Norse form of the name was just Dalr, identical with the word dalr which menas "valley" or "dale". The first element Nord- meaning "northern" was added around the year 1600. The parish church is still called Dale church. Before 1918, the name was written Norddalen.