The following is a list of Sites of Special Scientific Interest in the Nithsdale Area of Search. Nithsdale is a sub-area of Dumfriesshire County within the Dumfries and Galloway unitary council area of Scotland. These SSSIs can be found by searching within the SiteLink website maintained by NatureScot/NàdarAlba. For other areas, see List of SSSIs by Area of Search.