Vatnsfjörður (Icelandic pronunciation: [ˈvassˌfjœrðʏr̥]) is a nature reserve located north-west of Breiðafjörður on the Hjarðarnes coast of northwestern Iceland.

• The Environment Agency of Iceland (Umhverfisstofnun): Vatnsfjörður

65°34′48″N 23°08′42″W / 65.58°N 23.145°W / 65.58; -23.145