Map - Møre og Romsdal (Møre og Romsdal fylke)

Møre og Romsdal (Møre and Romsdal) is a county in the northernmost part of Western Norway. It borders the counties of Trøndelag, Innlandet, and Vestland. The county administration is located in the town of Molde, while Ålesund is the largest town. The county is governed by the Møre og Romsdal County Municipality which includes an elected county council and a county mayor. The national government is represented by the county governor.

The name Møre og Romsdal was created in 1936. The first element refers to the districts of Nordmøre and Sunnmøre, and the last element refers to Romsdal. Until 1919, the county was called "Romsdalens amt", and from 1919 to 1935 "Møre fylke".

For hundreds of years (1660-1919), the region was called Romsdalen amt, after the Romsdalen valley in the present-day Rauma Municipality. The Old Norse form of the name was Raumsdalr. The first element is the genitive case of the name Raumr derived from the name of the river Rauma, i.e. "The Dale of Rauma". Raumr may refer to stream or current, or to booming or thundering waterfalls like Sletta waterfall. A purely legendary approach to the name refers to Raum the Old, one of the sons of Nór, the eponymous Saga King of Norway. Since the majority of the residents of the county lived in the Sunnmøre region, there was some controversy over the name. In 1919, many of the old county names were changed and this county was renamed Møre fylke.

The name Møre was chosen to represent the region where the majority of the county residents lived. That name is dative of Old Norse: Mǿrr (á Mǿri) and it is probably derived from the word marr referring to something wet like bog (common along the outer coast) or the sea itself. The name is interpreted as "coastland" or "bogland". Møre was originally the name of the coastal area from Stad and north including most of Fosen. (There is also a coastal district in Sweden that has the same name: Möre.) The change in name from Romsdalen to Møre was controversial and it did not sit well with the residents of the Romsdal region. Finally in 1936, the name was changed again to a compromise name: Møre og Romsdal (Møre and Romsdal).

The ambiguous designation møring— "person from Møre"— is used strictly about people from Nordmøre (and less frequently for people from Sunnmøre), excluding the people from Romsdal (while, consequently, romsdaling— "person from Romsdal"— is used about the latter).