| Named By: | Sidney H. Houghton in 1925 |
| Time Period: | Middle-Late Triassic, 247-242 Ma |
| Location: | Australia - Ashfield Shale Formation. South Africa - Burgersdorp Formation |
| Size: | Unavailable |
| Diet: | Piscivore/Carnivore |
| Fossil(s): | Partial skulls and post cranial remains |
| Classification: | | Chordata | Amphibia | Temnospondyli | Stereospondyli | Trematosauridae | Trematosaurinae | |
Microposaurus (meaning "small eyed lizard"; from Greek mikros, "small" + opos, "face" or "eye" + sauros, "lizard") is an extinct genus of trematosaurid temnospondyl. Fossils are known from the Cynognathus Assemblage Zone of the Beaufort Group (part of the Karoo Supergroup) in South Africa and the Rouse Hill Siltstone of Australia that date back to the Anisian stage stage of the Middle Triassic. These aquatic creatures were the short snouted lineage from Trematosaurinae.