|OS Name:||Hoo Stack|
|Shetland Name:||Hoo Stack|
|UK Grid Reference:||HU505520|
Hoo Stack is a small islet which lies off the east coast of South Nesting in the central Shetland Mainland, approximately 3km ENE from the North Isle of Gletness, and 1.5km SE from the Moul of Eswick.
The isle stands 34m high and is topped by the Hoo Stack Lighthouse, which was first lit in 1986.