Fuday (Scottish Gaelic: Fùideigh) is an uninhabited island of about 232 hectares (570 acres) and is one of ten islands in the Sound of Barra, a Site of Community Importance for conservation in the Outer Hebrides of Scotland.

It lies just east of Scurrival Point on Barra and west of Eriskay.

It is still used for the summer grazing of cattle, and they used to be swum across the 1-mile-wide (2-kilometre), but shallow, Caolas Fuideach (strait) to there from Eoligarry.

The cattle thus could not find drinking water and died of thirst.

This article about a location in the Western Isles is a stub.