The violet-throated metaltail (Metallura baroni), locally called metalura gorjivioleta, is an Endangered species of hummingbird in the "coquettes", tribe Lesbiini of subfamily Lesbiinae.

Its slightly forked tail is iridescent violaceous sky blue on its upper side and glittering yellow-green on its underside.

Its throat is a duller version of the male's and its breast, and belly are whitish gray spotted with olive green.

[6] The violet-throated metaltail is found only on the Cajas Plateau west of the city of Cuenca, Ecuador.

It inhabits the edges of elfin forest and Polylepis woodlands and adjacent páramo grasslands.

[6] The violet-throated metaltail forages for nectar by hovering; it feeds on a variety of flowering vegetation at any level of its habitat.

[1] Its range includes El Cajas National Park and the small adjoining Río Mazán reserve.