Because of its special significance, St Kilda has been awarded a number of important designations.
In addition to its National Nature Reserve status, St Kilda has been nominated a:
- Scheduled Ancient Monument
- National Scenic Area
- Site of Special Scientific Interest
- Scotland's first UNESCO World Heritage Site
- European Community Special Protection Area
- Marine World Heritage Site, and
- one of only 24 'mixed' World Heritage Sites in the World.