Utsira (pronounced [ˈʉ̌ːtˌsiːrɑ]) is the least populous municipality in Norway. The island municipality is located in northwestern Rogaland county, just off the western coast of Norway. Utsira is part of the traditional district of Haugaland.

The municipality consists of the main island of Utsira as well as several small, uninhabited outlying islands. Utsira is located in the North Sea, about 18 kilometres (11 miles) west of the town of Haugesund. All of the 206 residents (as of 2015) live on the main island of Utsira, where the administrative centre and Utsira Church are located.

The 6-square-kilometre (2.3 sq mi) municipality is the 355th largest by area out of the 356 municipalities in Norway, making it the second smallest municipality in Norway after the nearby island municipality of Kvitsøy. Utsira is the 356th most populous municipality in Norway with a population of 208, making it the smallest municipality in Norway by population, followed by Modalen Municipality. The municipality's population density is 33 inhabitants per square kilometre (85/sq mi) and its population has decreased by 0.5% over the previous 10-year period.

The municipality of Utsira was established on 1 July 1924 when it was separated from the municipality of Torvastad. Initially, Utsira had 414 residents. The municipal borders have not changed since that time.

The municipality (originally the parish) is named after the island of Utsira which makes up the vast majority of the municipality. The Old Norse forms of the island's name was just Old Norse: Síri (nominative case) or Síra (genitive case). The first element, út which means "out" or "offshore", was added during the 16th century (compare the "Out Skerries" in Shetland). The meaning of the last element is uncertain, but it may mean something like "strong stream". The inhabitants still call the island Sira (leaving off the ut prefix) and an inhabitant of the municipality is called a sirabu. The Norwegian language has had several spelling reforms during the 19th and 20th centuries. Before 1875, the name of the parish was written "Udsire", from 1875 to 1924 it was spelled "Utsire", and since 1925 it has used the spelling "Utsira".

The coat of arms was granted on 23 July 1982. The official blazon is "Azure, four piles issuant conjoined in cross argent" (Norwegian: I blått et kors dannet ved fire motstøtende sølv spisser). This means the arms have a blue field (background) and the charge is a set of four triangles whose points all meet in the centre, together making a cross shape. The charge has a tincture of argent which means it is commonly colored white, but if it is made out of metal, then silver is used. The design is meant to symbolize light beams flowing out of the Utsira Lighthouse which was built in the municipality in 1844. The municipality wanted to have the lighthouse on their arms since 1976, but no design they tried was approved by the government. Eventually, they hired John Digernes in 1980 to prepare a variant that could get approvaled. His design was approved in 1982. Since 2004 there have been wind turbines built in the municipality and the design of the arms is also seen to represent those with three wings and a tower. The municipal flag has the same design as the coat of arms.

The Church of Norway has one parish (sokn) within the municipality of Utsira. It is part of the Haugaland prosti (deanery) in the Diocese of Stavanger.

Churches in Utsira

Parish (sokn)	Church name	Location of the church	Year built
Utsira	Utsira Church	Utsira	1785

The island municipality is only accessible by boat. There are roads on the island. A car ferry operated by Rutebåten Utsira runs four round-trips per day connecting the island to the town of Haugesund on the mainland. The trip takes about 70 minutes each way. There are ferry docks on the north and south side of the island. The northern port is more often used because the southern route takes a little longer; the southern is used if the weather demands. An ambulance helicopter can land at the football field in medical emergencies.

Utsira Municipality is 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 is governed by a municipal council of directly elected representatives. The mayor is indirectly elected by a vote of the municipal council. The municipality is under the jurisdiction of the Haugaland og Sunnhordland District Court and the Gulating Court of Appeal.

The municipal council (Kommunestyre) of Utsira is made up of 11 representatives that are elected to four year terms. The tables below show the current and historical composition of the council by political party.

The mayors (Norwegian: ordfører) of Utsira:

There are remains from the Stone Age on the island. It has been populated since that time. Historically, the island was governed by Torvastad, based on the mainland, but on 1 July 1924 the island was separated and it was established as a separate municipality. At that time, a new municipal council was to be elected. It was intended that the twelve men on the interim council would be elected, but the official list of candidates listed eleven women and a man. This was not known to even the people involved until the day of the election and by then it was too late. Despite a legal challenge the twelve were elected and Aasa Helgesen, the local midwife, was elected the first Mayor of Utsira and the first female mayor in Norway. Helgesen was a successful Mayor until 1928.

In 2004, Norsk Hydro installed a combined wind-hydrogen utility on Utsira. It is a full scale pilot project for energy self-sufficiency for a remote community. In periods when there is surplus wind energy, the excess power will be used for generating hydrogen by electrolysis. The hydrogen is stored, and is available for power generation in periods where there is little wind. Additional to this an energy storing flywheel exists to help out when for a short time more power is needed.

Utsira has an oceanic climate (Köppen: Cfb) with cool/mild summers and chilly winters with lots of rainfall. The climate is mild for the latitude; average lows in winter remain above freezing. The island has significant seasonal lag with February–March typically being the coldest months of the year while August is the warmest. The maritime position also renders low diurnal variation in temperature between day and night. The driest season is April - July while the wettest season is August - January. October on average get nearly three times as much precipitation as May. The extreme temperatures in Utsira ranged from −15.5 °C (4.1 °F) on February 6, 1895 to 29.3 °C (84.7 °F) on July 17, 2003.

Utsira (under the spelling Utsire) gives its name to "North Utsire" and "South Utsire", two of the sea areas of the British Shipping Forecast.

• Aasa Helgesen (1877–1968), a Norwegian midwife (1903-1942) and politician who served as Mayor of Utsira (1926-1928), making her the first female mayor in Norway

Utsira Lighthouse is the highest lighthouse light in Norway at 78.2 metres (257 ft) above mean sea level.

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  View of Utsira Lighthouse
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  Lighthouse tower
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  Utsira lighthouse sign

Utsira is known as the best birding site in Norway. There have been 317 different species recorded on Utsira, of which 23 are new to Norway.

• Media related to Utsira at Wikimedia Commons
• The dictionary definition of Utsira at Wiktionary
• Rogaland travel guide from Wikivoyage
• Municipal fact sheet from Statistics Norway (in Norwegian)
• Municipality web site (in Norwegian)
• Map
• Birding on Utsira (in Norwegian)