Telmatornis is a prehistoric bird genus of unclear affiliations. It apparently lived in the Late Cretaceous; its remains were found in the early Maastrichtian (c.71-68 million years ago) Navesink Formation of New Jersey. A single species is included today, Telmatornis priscus. It was for some time united with other taxa of aquatic birds from around the Cretaceous-Paleocene boundary in the form taxon "Graculavidae", the supposed "transitional shorebirds", but this group is now known to be artificial.