The white tern or common white tern (Gygis alba) is a small seabird found across the tropical oceans of the world. It is sometimes known as the fairy tern, although this name is potentially confusing as it is also the common name of Sternula nereis. Other names for the species include angel tern and white noddy in English, and manu-o-Kū in Hawaiian. The little white tern (Gygis microrhyncha), previously considered a subspecies of the white tern (Gygis alba microrhyncha), is now recognised as a separate species.