Notobatrachus is an extinct genus of frog from the Lower Jurassic (Toarcian) Cañadon Asfalto Formation, Cañadón Asfalto Basin and Middle Jurassic La Matilde Formation, Deseado Massif of Patagonia, Argentina.

[3] N. degiustoi is the most completely known Jurassic frog and has been recorded in many outcrops of the La Matilde Formation of the Deseado Massif in southern Patagonia.

[5][4] CPBA-V-14003 consists of disarticulated cranial and postcranial elements, and may correspond either to a late metamorphosing tadpole or an early postmetamorphic individual.

Tadpoles of this species reached lengths of 15.9 centimetres (6.3 in), among the largest recorded in frogs living or extinct.

Tadpoles of Notobatrachus degiustoi are thought to have lived in ephemeral ponds that formed and disappeared seasonally.