Taransay is an island in the Outer Hebrides of Scotland. It was the host of the British television series Castaway 2000. Uninhabited since 1974, except for holidaymakers, Taransay is the largest Scottish island without a permanent population. It is 1 hectare larger than Scarba, which is also uninhabited.

The Outer Hebrides or Western Isles, sometimes known as the Long Isle or Long Island, is an island chain off the west coast of mainland Scotland. The islands are geographically coextensive with Comhairle nan Eilean Siar, one of the 32 unitary council areas of Scotland. They form part of the archipelago of the Hebrides, separated from the Scottish mainland and from the Inner Hebrides by the waters of the Minch, the Little Minch, and the Sea of the Hebrides.