| Named By: | K. Dennis & R. A. Miles in 1979 |
| Time Period: | Frasnian |
| Location: | Australia - Gogo Formation |
| Size: | Unavailable |
| Diet: | Carnivore |
| Fossil(s): | Partial remains |
| Classification: | | Chordata | Placodermi | Arthrodira | Camuropiscidae | |
Tubonasus lennardensis is a long-snouted arthrodire placoderm from the Gogo Formation of Late Devonian Western Australia.