The Blyth's Hawk Eagle, Nisaetus alboniger (earlier treated as Spizaetus) is a bird of prey. Like all eagles, it is in the family Accipitridae.
It breeds in Peninsula Malaysia, Singapore, Sumatra, Borneo. It is a bird of open woodland, although island forms prefer a higher tree density. It builds a stick nest in a tree and lays a single egg.
It is a medium-sized raptor at about 51-58cm in length. Adult has a thick white band on uppertail and undertail, all black above, black spotted breast, barred below. It has a prominent crest like the bazas. Juvenile is dark brown above, and has a light brown head and underparts.
The common name commemorates Edward Blyth (1810-1873), English zoologist and Curator of the Museum of the Asiatic Society of Bengal.