Dalvík is the main village of the Icelandic municipality of Dalvíkurbyggð. Its population is approximately 1,400.

The town's name means "valley bay."

Dalvík harbor is a regional commercial port for import and fishing. The ferry Sæfari, which sails from Dalvík, serves the island of Grímsey, Iceland's northernmost community, which lies on the Arctic Circle.

The annual Fiskidagurinn mikli is held the Saturday after the first Monday of August, attended by up to 30,000 people who enjoy a free fish buffet sponsored by the local fishing industry. Dalvík has had four representatives at the Eurovision song contest for Iceland, despite its small size

In sports, Dalvík is probably most known for alpine skiing. Böggvisstaðafjall is one of the best known ski areas in Iceland. The town has produced a series of skiers who have represented Iceland in the Olympics, World Cups, World Championships, and European Cups, as well as other international and national competitions.