Atelognathus is a genus of frogs in the family Batrachylidae. Sometimes known as Patagonia frogs, these frogs are endemic to Patagonia (southernmost Argentina and Chile).
There are seven species in the genus:
Formerly, Chaltenobatrachus grandisonae was also included in this genus (as Atelognathus grandisonae), before being moved to its own monotypic genus.