The wedge-tailed grass finch (Emberizoides herbicola) is a species of bird in the family Thraupidae; it was formerly placed in the Emberizidae. It is found in Argentina, Bolivia, Brazil, Colombia, Costa Rica, Ecuador, French Guiana, Guyana, Panama, Paraguay, Peru, Suriname, Uruguay, and Venezuela.
Its major range is in southeastern South America in southern Brazil, Bolivia, eastern Paraguay, and extreme northeast Argentina in the cerrado, pantanal, and southern caatinga; it also ranges into northern Colombia with central Venezuela, and the Atlantic coastal Guianas, as well as Ilha de Marajo at the Amazon River outlet. Its natural habitats are dry savanna, subtropical or tropical seasonally wet or flooded lowland grassland, and heavily degraded former forest.
