Eid is a former municipality in the county of Sogn og Fjordane, Norway. It was located in the traditional district of Nordfjord. The village of Nordfjordeid was the administrative center of the municipality. Other larger villages in Eid included Mogrenda, Stårheim, Haugen, Kjølsdalen, Heggjabygda, and Lote.

At the time of its dissolution in 2020, the 469-square-kilometre (181 sq mi) municipality is the 215th largest by area out of the 422 municipalities in Norway. Eid is the 168th most populous municipality in Norway with a population of 6,157. The municipality's population density is 14.7 inhabitants per square kilometre (38/sq mi) and its population has increased by 5.2% over the last decade.

Eid was known for its opera, fjord horses, shopping, and hiking opportunities. As in the rest of the region, agriculture was very important here, but trade and industry were also important. Frislid Konfeksjon (textiles) and the Hellesøy Nordfjord shipyard among others are located in Eid.

Nordfjordeid's schools include the folk high school, which offers courses linked to Fjord horses and provides the only circus education in Norway. There is also the Norwegian Fjord Horse Centre (Norsk Fjordhestsenter) in Eid. Its focus is in boosting the breed's standing in Norway and elsewhere.

Eid was established as a municipality on 1 January 1838 (see formannskapsdistrikt law). The original municipality was identical to the Eid parish (prestegjeld) with the sub-parishes (sokn) of Hornindal, Eid, and Stårheim. On 1 January 1867, the eastern district of Hornindal was separated from Eid to form its own municipality. This split left the two remaining sub-parishes of the municipality of Eid with a population of 2,918.

During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1965, the neighboring Davik Municipality and Hornindal Municipality were dissolved and split up among their neighbors. Eid Municipality gained all of Davik that was north of the Nordfjorden and east of and including the village of Lefdal. (Population in that area was 654.) All of Hornindal municipality west of and including the villages of Navelsaker and Holmøyvik (population: 310) was also merged into Eid. After this merger, Eid's total population was 4,532. At this point, Eid gained a third sub-parish from the former municipality of Davik: Kjølsdalen. Then on 1 January 1992, the village of Lote and its surrounding area (population: 152) was transferred from Gloppen Municipality to Eid.

On 1 January 2020, Eid Municipality ceased to exist when it was merged with the neighboring Selje Municipality and the Bryggja-Totland area of Vågsøy Municipality to form the new Stad Municipality.

The municipality (originally the parish) is named after the Eidsfjorden (Old Norse: Øygir) since it is a central geographical feature of the area. The fjord is a branch off the main Nordfjorden. The fjord name likely comes from an old river name (now called Eidselva). The name of the river was probably derived from the word aug or ǫfugr which both mean "turned the wrong way" or "backwards". This is likely because the river Eidselva meanders back and forth and from certain points it can seem to run backwards. Over the centuries, the name was corrupted so that it became more like the word Eid which is a Norwegian word that is derived from eið which means "isthmus".

The coat of arms was granted on 26 April 1986 and they were in use until 1 January 2020 when the municipality ceased to exist. The official blazon is "Gules, a horse head couped Or" (Norwegian: På raud grunn eit gull hestehovud). This means the arms have a red field (background) and the charge is the head of a fjord horse (Fjording), cut cleanly at the neck. The charge has a tincture of Or which means it is commonly colored yellow, but if it is made out of metal, then gold is used. The region is well known for its own breed of horses, called the Fjording, that are very common and popular in the area. The Fjording is characterised by its white and black mane. The arms were designed by Inge Rotevatn. The municipal flag has the same design as the coat of arms.

The Church of Norway had three parishes (sokn) within the municipality of Eid. It is part of the Nordfjord prosti (deanery) in the Diocese of Bjørgvin.

Churches in Eid

Parish (sokn)	Church name	Location of the church	Year built
Eid	Eid Church	Nordfjordeid	1849
	Heggjabygda Church	Heggjabygda	1936
Kjølsdalen	Kjølsdalen Church	Kjølsdalen	1940
Stårheim	Stårheim Church	Stårheim	1864

While it existed, this municipality was responsible for primary education (through 10th grade), outpatient health services, senior citizen services, unemployment, social services, zoning, economic development, and municipal roads. During its existence, this 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 Sogn og Fjordane District Court and the Gulating Court of Appeal.

The municipal council (Kommunestyre) of Eid was made up of 29 representatives that were elected to four year terms. The party breakdown of the final municipal council was as follows:

The mayors of Eid:

The municipality of Eid was located in the northernmost part of Sogn og Fjordane county. It was located along the northern shores of the Nordfjorden and it surrounded the Eidsfjorden branch off of the main Nordfjorden. Eid was bordered to the west by the municipality of Vågsøy, to the south by the municipalities of Bremanger and Gloppen, to the east by the municipalities of Stryn and Hornindal, and to the north by the municipalities of Volda and Vanylven in Møre og Romsdal county.

The lake Hornindalsvatnet, the deepest lake in Europe, was partially located in Eid municipality.

• Sophus Lie (1842–1899), a mathematician
• Azar Karadaş, a football player
• Harald Aabrekk, a soccer coach

• List of former municipalities of Norway

• Sogn og Fjordane travel guide from Wikivoyage