|Time Period:||Late Devonian|
|Location:||Australia and Germany|
|Size:||About 60 centimetres long|
|Classification:||| Chordata | Sarcopterygii | Dipnoi | Dipteriformes ||
Griphognathus ("hook-jaw") is an extinct genus of lungfish from the late Devonian period of Europe and Australia.
Griphognathus was a specialized lungfish, about 60 centimetres (24 in) long, with an elongated snout. The lower jaw and palate were lined with tooth-like denticles. Like all other lungfish, its skin was covered by overlapping scales, and it had an asymmetrical tail.