| Named By: | Matthew in 1908 |
| Time Period: | Leonardian stage, 275 Ma |
| Location: | USA, Texas |
| Size: | Skull is 9 centimetres long. Total body length unknown due to lack of fossil material |
| Diet: | Carnivore |
| Fossil(s): | Single skull |
| Classification: | | Chordata | Synapsida | Tetraceratopsidae | |
Tetraceratops insignis ("four-horned face emblem") is an extinct synapsid from the Early Permian that may be the first known representative of Therapsida, a group that includes mammals and their close extinct relatives. It is known from a single 90 mm (3.5 in) long skull, discovered in Texas in 1908.