Breim is a former municipality in the old Sogn og Fjordane county, Norway. It is part of the traditional district of Nordfjord in the eastern part of the present-day Gloppen Municipality which is now in Vestland county. The 359-square-kilometre (139 sq mi)^[3] municipality existed from 1886 until 1964. The administrative center was the village of Reed (sometimes called Re).

Breim municipality was located to the east of Gloppen, south of Stryn and the Utvik mountains, west of the Jostedalsbreen glacier, and north of Jølster. The municipality was centered on the lake Breimsvatn. Many of the inhabitants lived on the shores of the lake or in the large river valley extending east from the lake. The main church for the municipality was Breim Church, located in Reed.

The area of Breim was divided into two school districts: Byrkjelo, with the Byrkjelo school and Reed with the Reed school. Both schools were primary schools. After 8th grade students had to travel to the Gloppen ungdomskule (secondary school) in Sandane.

On 1 January 1886, Gloppen Municipality was split into two municipalities: Gloppen (population: 2,970) and Breim (population: 1,823). During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1964, the small Førde farm (population: 38) at the southern end of the lake Breimsvatnet was administratively transferred to Jølster Municipality to the south. On the same date, the rest of Breim (population: 1,731) was merged (back) into Gloppen Municipality.^[4]

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.^[6]

• List of former municipalities of Norway