Wautaugategu is an extinct genus of teiid lizard in the subfamily Tupinambinae, known from the Middle Miocene of the southeastern United States. The genus contains a single species, Wautaugategu formidus, described from a single thoracic vertebra recovered from a Barstovian 2 paleocoastal deposit in southwestern Georgia, United States.
Wautaugategu formidus was described in 2025 by Jason R. Bourque and Edward L. Stanley in the Journal of Paleontology based on a single vertebra interpreted as belonging to a tupinambine teiid, anatomically similar to modern tegus. The fossil was excavated in the early 2000s from a fuller's earth clay mine in southwestern Georgia, just north of the Florida border, and housed in the Florida Museum of Natural History collections. It was later recognized as a vertebra from a tegu-like animal.
The generic name, Wautaugategu, references Wautauga State Forest near the discovery area, combined with "tegu", the common name used for some tupinambines. The specific name, formidus, is a Latin word meaning , alluding to the climatic conditions the taxon would have inhabited and the preferred body temperatures of living relatives.