No direct evidence, but scientists rate the odds as good. https://en.wikipedia.org/wiki/Tyrannosaurus#Skin_and_feathers https://en.wikipedia.org/wiki/Tyrannosa

No direct evidence, but scientists rate the odds as good. https://en.wikipedia.org/wiki/Tyrannosaurus#Skin_and_feathers https://en.wikipedia.org/wiki/Tyrannosaurus#Skin_and_feather... > Mark Norell of the American Museum of Natural History summarized the balance of evidence by stating that: "we have as much evidence that T. rex was feathered, at least during some stage of its life, as we do that australopithecines like Lucy had hair."