The Sanford's sea eagle (Haliaeetus sanfordi), sometimes listed as Sanford's fish eagle or Solomon eagle, is a species of sea eagle endemic to the Solomon Islands. The "sea eagle" name is to be preferred, to distinguish the species of Haliaeetus from the closely related Ichthyophaga true fish eagles. The species was described in 1935 by Ernst Mayr who noticed that earlier observers had overlooked it, thinking it was a juvenile of the white-bellied sea eagle.