Hildasay
Template:Short description Template:For Template:Use British English Template:Use dmy dates Template:Infobox Scottish island Hildasay (Template:Langx; Template:Langx) (from the Old Norse masculine name Hildir with ey "island"),<ref name=Lind/> also known as Hildisay, is an uninhabited island off the west coast of the Shetland Mainland.

Geography and geology
Hildasay has an area of Template:Convert, and is Template:Convert in elevation at its highest point. It consists of red-green granite (epidotic syenite) that was quarried for many years.<ref name=Smith/><ref name=gaz>Template:Cite web</ref>
The south coast has two narrow inlets, Cusa Voe and Tangi Voe. "West", the larger of two lochs, has a single islet. A satellite island, Linga lies to the south east. A long line of skerries and holms lies to the north west.<ref name=Smith/>
History
Hildasay has been uninhabited since the late nineteenth century, but as late as 1891 had a population of 30. The island's former industries included curing herring and quarrying granite. The remains of a railway line leading from the quarry to the harbour can still be seen.<ref name=gaz/>
As of 2020 there was one house on the island, which was temporarily occupied by charity walker Chris Lewis and his dog Jet when movement restrictions were imposed during the COVID-19 pandemic.<ref>Template:Cite web</ref>