Harstad IBK

The town of Harstad was established as a municipality on 1 January 1904 when it was separated from the large Trondenes Municipality because it had just been declared a ladested (small seaport). The initial population of the town of Harstad was 1,246. During the 1960s, there were many municipal mergers across Norway due to the work of the Schei Committee. On 1 January 1964, the town of Harstad (population: 3,808) was merged with neighboring Sandtorg Municipality (population: 7,512) and Trondenes Municipality (population: 6,567) to form a new, larger Harstad Municipality with a population of 17,882. Prior to the merger, the town of Harstad had 3,808 residents. On 1 January 2013, the neighboring Bjarkøy Municipality (to the north) was merged with Harstad, forming a new, larger Harstad Municipality.

On 1 January 2020, the municipality became part of the new Troms og Finnmark county which replaced the old Troms county. On 1 January 2024, the Troms og Finnmark county was divided and the municipality once again became part of Troms county.

In recent years, a 3000-year-old bronze axe and a 2600-year-old bronze collar have been found at the Trondenes peninsula, just north of the city center. These, together with the burial cairns built close to the sea, are indications of a well-developed Bronze Age culture in the Harstad area.

There is also substantial archeological evidence of a well-developed Iron Age culture in the area, around 200 AD.

Trondenes is mentioned in the Heimskringla as a power centre in the Viking Age and a place to meet and discuss important issues (Trondarting). In 2020 archeologist concluded that Sandtorg, located along the Tjeldsundet strait, south of the town of Harstad, was the location of the only known Viking Age trading place in Northern Norway. The Tjeldsundet strait was very likely an important ship lane back then as it still is today.

Trondenes Church, the world's northernmost medieval church, which dates back to the 13th–15th century, is situated just outside the town.

Adjacent to the church is the Trondenes Historical Center and nearby is the Adolf Gun, an enormous land-based cannon from World War II, and the last of four cannons originally constructed by the Nazis. Harstad is one of the few towns in this part of Norway which were left largely undamaged by World War II.

• Sandtorg, where a trading place from the Viking age was located
• Harstad Kulturhus (culture house)
• Rikard Kaarbø was the founder of Harstad.
• Trondenes Church at Trondenes.
• Northern part of Harstad at night, early August. View towards north-west from Gangsåstoppen

The municipality (and town) is named after the old Harstad farm (Old Norse: Harðarstaðir), since the town is built where the farm once was located. The first element is (probably) the genitive case of the male name Hǫrðr. The last element is staðir which means "homestead" or "farm". On 6 February 2017, the municipality of Harstad adopted a co-equal Sami language name for the municipality: Hárstták. The Sami language name spelling changes depending on how it is used. It is called Hárstták when it is spelled alone, but it is Hársttáid suohkan when using the Sami language equivalent to "Harstad municipality".

The coat of arms was granted on 24 April 1953. The official blazon is "Azure, two bars wavy argent" (Norwegian: To bølgende sølv bjelker på blå bunn). This means the arms have a blue field (background) and the charge is two wavy bars. The bars have a tincture of argent which means they are commonly colored white, but if it is made out of metal, then silver is used. The blue color in the field symbolizes the importance of sea and the wavy bars were chosen to represent the waves in the sea. Since the town of Harstad is located in the municipality, a mural crown is typically shown above the shield. The arms were designed by Jardar Lunde in cooperation with Hallvard Træteberg.