Eriskay, from the Old Norse for "Eric's Isle", is an island and community council area of the Outer Hebrides in northern Scotland with a population of 143, as of the 2011 census. It lies between South Uist and Barra and is connected to South Uist by a causeway which was opened in 2001. In the same year Ceann a' Ghàraidh in Eriskay became the ferry terminal for travelling between South Uist and Barra. The Caledonian MacBrayne vehicular ferry travels between Eriskay and Ardmore in Barra. The crossing takes around 40 minutes.

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.