Rockall () is an uninhabitable granite islet situated in the North Atlantic Ocean. The United Kingdom claims that Rockall lies within its exclusive economic zone and is part of its territory, but this claim is not recognised by the Republic of Ireland. It and the nearby skerries of Helen's reef are the only emergent parts of the Rockall Plateau. The rock was formed by magmatism as part of the North Atlantic Igneous Province during the Paleogene.
Rockall’s approximate distances from the closest islands in each direction are as follows: It is 301.3 kilometres west of Soay, Scotland; 423.2 km northwest of Tory Island, Ireland; and 700 kilometres south of Iceland.
