Fetlar is one of the North Isles of Shetland, Scotland, with a usually resident population of 61 at the time of the 2011 census. Its main settlement is Houbie on the south coast, home to the Fetlar Interpretive Centre. Other settlements include Aith, Funzie, Herra and Tresta. Fetlar is the fourth-largest island of Shetland and has an area of just over 4,000 ha.

Shetland, also called the Shetland Islands, is an archipelago in Scotland lying between Orkney, the Faroe Islands, and Norway. It is the northernmost region of the United Kingdom.