Osvaldoa

{{Short description|Genus of plants}}

{{Speciesbox

| image =

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| display_parents = 5

| genus = Osvaldoa

| parent_authority = J.R.Grande

| species = valida

| authority = (Mez) J.R.Grande

}}

Osvaldoa is a monotypic genus of flowering plants belonging to the family Poaceae. The only species is Osvaldoa valida.{{cite web |title=Osvaldoa J.R.Grande {{!}} Plants of the World Online {{!}} Kew Science |url=https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:77138084-1 |website=Plants of the World Online |access-date=27 May 2021 |language=en}}

Its native range is Southern Brazil to Northeastern Argentina.