Austrochthamalia

{{Short description|Genus of flowering plants}}

{{Automatic taxobox

|taxon = Austrochthamalia

|authority = Morillo & Fontella (2013)

|subdivision_ranks =

|subdivision =

• Austrochthamalia boliviana {{small|Morillo & Fontella}}
• Austrochthamalia purpurea {{small|(Decne.) Morillo & Fontella}}
• Austrochthamalia teyucuarensis {{small|H.A.Keller}}

|subdivision_ref = [https://powo.science.kew.org/taxon/urn:lsid:ipni.org:names:60470232-2 Austrochthamalia Morillo & Fontella]. Plants of the World Online. Retrieved 19 October 2023.

}}

Austrochthamalia is a genus of flowering plants in the dogbane family, Apocynaceae. It includes three species native to South America, ranging from Bolivia to southeastern Brazil and northeastern Argentina.