Aethopyga is a genus of birds in the sunbird family Nectariniidae. Species in this genus are found in South Asia, Southeast Asia and parts of China. Many species such as the grey-hooded sunbird, Apo sunbird, metallic-winged sunbird, handsome sunbird, and Lina's sunbird are endemic to the Philippines.

Sunbirds and spiderhunters make up the family Nectariniidae of passerine birds. They are small, slender passerines from the Old World, usually with downward-curved bills. Many are brightly coloured, often with iridescent feathers, particularly in the males. Many species also have especially long tail feathers. Their range extends through most of Africa to the Middle East, South Asia, South-east Asia and southern China, to Indonesia, New Guinea and northern Australia. Species diversity is highest in equatorial regions.