|• District||6.1 km2 (2.4 sq mi)|
|• Urban||3.8 km2 (1.5 sq mi)|
|• Density||1,600/km2 (4,200/sq mi)|
Árbær (Icelandic pronunciation: [ˈauːrˌpaiːr̥]) is a district within the city of Reykjavík, Iceland. It includes five neighbourhoods: Árbær proper, Ártúnsholt, Norðlingaholt, Selás and the industrial area Hálsar. The area has approximately 13,000 inhabitants.
Located in eastern part of the city, the Árbær neighborhood is well known for its natural surroundings and pristine nature. The Elliðaárdalur valley and the river flowing through are at the heart of Árbær.
The core residential part was built in the 1960s to 1970s in a Nordic functionalistic style, similar to nearby Breiðholt. Development of the outer parts started in the 1980s and continued well into the 90s. The 2000s saw the construction of Norðlingaholt at the eastern edge of the city, as well as a new commercial lot adjacent to the oldest part.
The local sports club is Fylkir, who play in the Icelandic Premier League and are two times Icelandic Men's Football Cup winners. The upper part of the valley is also a centre for horseback riding in the city, offering facilities and designated tracks.