The white-naped honeyeater (Melithreptus lunatus) is a passerine bird of the honeyeater family Meliphagidae native to eastern Australia. Birds from southwestern Australia have been shown to be a distinct species, Gilbert's honeyeater, and the eastern birds are more closely related to the black-headed honeyeater of Tasmania. One of several similar species of black-headed honeyeaters in the genus Melithreptus, it dwells in dry sclerophyll eucalypt woodland. Its diet consists of nectar from various flowers, and it also feeds on insects.