Ololygon aromothyella is a species of frog in the family Hylidae. It is found in Argentina, Uruguay and possibly Brazil. Its natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical seasonally wet or flooded lowland grassland, rivers, freshwater marshes, and intermittent freshwater marshes. Sources aromothyella Amphibians described in 2005 Frogs of South America Taxonomy articles created by Polbot