The Tomb of the Eagles, or Isbister Chambered Cairn, is a Neolithic chambered tomb located on a cliff edge at Isbister on South Ronaldsay in Orkney, Scotland. The site was discovered by Ronald Simison, a farmer, when digging flagstones in 1958; he conducted a limited excavation and removed some bones and skulls at that time but filled in the site with dirt. A more extensive excavation was started in 1976, and "an enormous amount of material was removed", according to a report published in 2002.