Møre og Romsdal [ˈmøːrə ɔ ˈrumsdɑːl] (listen) (Møre and Romsdal) is a county in the northernmost part of Western Norway. It borders the counties of Sør-Trøndelag, Oppland and Sogn og Fjordane. The county administration is located in the city of Molde, while Ålesund is the largest city. 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 (currently Lodve Solholm).

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 1919-1935 "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 a name Raumr, probably the old (uncompounded) name of the Romsdalsfjord, again derived from the name of the river Rauma, i.e. "The Dale of Rauma". 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.

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