Eresfjord og Vistdal is a former municipality in Møre og Romsdal county, Norway. The municipality existed from 1890 until its dissolution in 1964. The area is now part of Molde Municipality in the traditional district of Romsdal. The administrative centre was the village of Eresfjord. The municipality included the two parishes of Vistdal and Eresfjord and there were two churches in the municipality: Sira Church in Eresfjord and Vistdal Church in Myklebostad.
Prior to its dissolution in 1964, the municipality was the 123rd largest by area out of the 689 municipalities in Norway. Eresfjord og Vistdal Municipality was the 568th most populous municipality in Norway with a population of about 1,302. The municipality's population density was and its population had decreased by 9.9% over the previous 10-year period.
The municipality of Eresfjord og Vistdal was established on 1 January 1890 when it was split off from Nesset Municipality. Eresfjord og Vistdal Municipality had an initial population of 2,155. During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1964, Eresfjord og Vistdal Municipality (population: 1,289) was merged with Nesset Municipality (population: 2,360).
The municipality (originally the parish) is named Eresfjord og Vistdal, a compound name meaning "Eresfjord and Vistdal", referring to the local Eresfjorden (fjord) and Vistdalen valley. The first part is Eresfjord (). The first element of this part comes from the old name of the local river Aura (). This name comes from the word which means "gravel" or "coarse sand". The last element of this part is which means "fjord". The second part of the name is Vistdal or Vistdalen (). The first element of this part is the genitive case of the word which means "calm" or "quiet one", referring to the main river running through the valley. The lower part of the river is a particularly quiet and gentle river. The last element of this part is which means "valley" or "dale". Historically, the name of the municipality was spelled Eresfjord og Vistdalen. On 3 November 1917, a royal resolution changed the spelling of the name of the municipality to Eresfjord og Vistdal, removing the definite form ending -en.
The Church of Norway had two parishes () within Eresfjord og Vistdal Municipality. At the time of the municipal dissolution, it was part of the Nesset prestegjeld and the Indre Romsdal prosti (deanery) in the Diocese of Nidaros.
The municipality was located at the end of the Langfjorden and Eresfjorden. Nesset Municipality was to the north, Sunndal Municipality was to the east, Lesja Municipality (in Oppland county) was to the south, and Grytten Municipality, Hen Municipality, and Veøy Municipality were to the west. The highest point in the municipality was the tall mountain Høgbøra.
While it existed, Eresfjord og Vistdal Municipality was responsible for primary education (through 10th grade), outpatient health services, senior citizen services, welfare and other social services, zoning, economic development, and municipal roads and utilities. The municipality was governed by a municipal council of directly elected representatives. The mayor was indirectly elected by a vote of the municipal council. The municipality was under the jurisdiction of the Frostating Court of Appeal.
The municipal council of Eresfjord og Vistdal Municipality was made up of 17 representatives that were elected to four-year terms. The tables below show the historical composition of the council by political party.
The mayor () of Eresfjord og Vistdal Municipality was the political leader of the municipality and the chairperson of the municipal council. The following people have held this position: