Flateyri is a small port town located in Westfjords, Iceland. It has population around 200, ranking it Onundarfjordur's largest settlement.
Flateyri port has been an important trading post since 1792. It temporarily became a whaling station during the 19th century. An avalanche hit Flateyri in October 1995, destroying 29 houses and killing 20 people. A deflecting dam has since been built in order to protect the village from avalanches.
- During the 1990s, the village prospered as a fishing port. However, after 2008-2011's financial crisis, local fishing companies shut down and lots of the residents left. A fishing company based in Germany has set up base in Flateyri and is currently fishing in and out of Onundarfjordur.
- The Esso gas station was the subject of Belgian documentary in a series about worldwide gas stations. The 1995's avalanche was a subject of another feature documentary - "The Day of The Avalanche", which premiered in 2010 in Reykjavik (on the event's 15th anniversary).