The Glittering-bellied Emerald (Chlorostilbon lucidus) is a species of hummingbird in the Trochilidae family. It was formerly listed by the scientific name Chlorostilbon aureoventris, but this was shown to be mistaken by Pacheco & Whitney (2006). It is found in north-eastern Argentina, eastern and central Bolivia, eastern Brazil, Paraguay, and Uruguay. It is widespread and often common in a wide range of semi-open habitats, incl. gardens and parks.