Wiay (Scottish Gaelic: Bhuia or Fuidheigh) is an uninhabited island in the Outer Hebrides.

The island is very flat with fertile ground and sandy beaches to the west whilst the east is predominantly peat moorland with a rocky coastline incorporating many small islands and inlets.

On the west side of the island are the ruins of an old cottage overlooking Bagh na Murla.

In the 18th century Bonnie Prince Charlie is said to have hidden in a cave on the island after the Battle of Culloden.

[6] The cave, known as Prince Charlie's Rest, is found to the east of the island at the foot of Beinn a Tuath and has clear views over the Minch and to Skye.