| Named By: | P. P. Vaughn in 1964 in 1964 |
| Time Period: | Permian |
| Location: | USA, Utah - Cutler Formation |
| Size: | About 90 centimetres long |
| Diet: | Uncertain, possibly an omnivore or herbivore |
| Fossil(s): | Single individual |
| Classification: | | Chordata | Reptiliomorpha | Diadectomorpha | Tseajaiidae | |
For the pterosaur, see Tapejara.
Tseajaia is an extinct genus of tetrapod. It was an anthracosaurian that lived in the Permian of North America. The skeleton is that of a medium-sized, rather advanced reptile-like amphibian. In life it was about 1 metre (3 ft) long and may have looked vaguely like an iguana, though slower and with a more amphibian foot without claws. The dentition was somewhat blunt, indicating herbivory or possibly omnivory.