Fort William is a town in Lochaber in the Scottish Highlands, located on the eastern shore of Loch Linnhe. At the 2011 census, Fort William had a population of 10,459, making it the second largest settlement in both the Highland council area, and the whole of the Scottish Highlands; only the city of Inverness has a larger population.

Lochaber is a name applied to a part of the Scottish Highlands. Historically, it was a provincial lordship consisting of the parishes of Kilmallie and Kilmonivaig, as they were before being reduced in extent by the creation of Quoad Sacra parishes in the 19th century. Lochaber once extended from the Northern shore of Loch Leven, a district called Nether Lochaber, to beyond Spean Bridge and Roybridge, which area is known as Brae Lochaber or Braigh Loch Abar in Gaelic. Lochaber is now also used to refer to a much wider area, one of the 16 ward management areas of the Highland Council of Scotland and one of eight former local government districts of the two-tier Highland region. The main town of Lochaber is Fort William.