Ísafjörður (pronounced [ˈiːsaˌfjœrðʏr̥], meaning ices' fjord) is a town in the north west of Iceland, seat of Ísafjarðarbær municipality.

The town draws its name from the fjord and the fjord was given its name simultaneously to the island^{[clarification needed]}. With a population of about 2,600 Ísafjörður is the largest town in the peninsula of Vestfirðir (Westfjords) and the seat of the Ísafjarðarbær municipality, which includes the nearby Hnífsdalur, Flateyri, Suðureyri, and Þingeyri. It is located on a spit of sand, or eyri, in the Skutulsfjörður fjord which meets the waters of the larger Isafjarðardjúp fjord.

The town is connected by road and a recent 5.4 km (3 mi) road tunnel to Bolungarvík which lies 15 km to the northwest, and to the small town of Súðavík to the east. The partly one-lane Vestfjarðagöng (Vestfirðir Tunnel), completed in 1996, leads to the small towns of Flateyri and Suðureyri, and to the western parts of the Westfjords. Ísafjörður has an airport with regular flights to Reykjavík.