Linga Holm, commonly known as Linga, Midgarth and the Holm of Midgarth is an uninhabited Scottish island extending to approximately 57 hectares (0.22 sq mi) situated 700 metres (770 yd) west of Stronsay island in the Orkney archipelago.

[6] The name "Linga Holm" is derived from the Old Norse Lyngholm.

In common with many other Orkney islands, Linga Holm contains numerous archaeological remains.

[3][7] In 1973 the Rare Breeds Survival Trust established a refuge population here of the very rare North Ronaldsay sheep, and the flock now numbers some 400.

[8][9] It is thought to be the third largest breeding ground for the Atlantic grey seal in the world, and is an important nesting site for greylag geese.