Flodday or Flodaigh (Scottish Gaelic), is a currently uninhabited island that lies to the north east of Barra and is one of ten islands in the Sound of Barra, a Site of Community Importance for conservation in the Outer Hebrides, Scotland.

Its name derives from the Old Norse for "flat island".

The island is gneiss with fertile soil.

A reef to the north ends in a drying islet, Snagaras.

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