The Quoyness chambered cairn is located on Sanday in Orkney, Scotland. It is approximately 5,000 years old and is located on the shoreside.
The cairn is about 4 metres (13 ft) high and can be accessed by crawling through the entrance passage, itself 9 metres (30 ft) long. Only half the entrance passage is roofed. A stone platform surrounds the cairn, and when originally built the cairn would have looked like Maeshowe today. Bones from 10 adults and 5 children were removed. The property is now in the care of Historic Scotland.