The errantiate polychaetes from waters deeper than 200 m in Hardangerfjorden include 37 species of which 5 are newly described. These include Nothria fiordica, Eunice dubitatus, Lumbrineris agostos, L. aniara, and L. scopa. The faunal composition indicates a close relationship to shallow water faunas in the region, and differs from the usual composition of deep-water polychaetes. A preliminary analysis indicates the presence of ecological groupings of polychaetes in Hardangerfjorden.