Urania leilus, the green-banded urania, is a day-flying moth of the family Uraniidae. The species was first described by Carl Linnaeus in his 1758 10th edition of Systema Naturae. It is found in tropical South America east of the Andes, including Suriname, French Guiana, eastern Colombia, Venezuela, eastern Ecuador, Brazil, northern Bolivia, eastern Peru, and Trinidad. It has been recorded as a vagrant to the central and northern Lesser Antilles such as St. Kitts, Barbados and Dominica. The habitat consists of riverbanks in primary and secondary rainforest at elevations between sea level and about 800 m (2,600 ft).