Plataleorhynchus is a genus of ctenochasmatid pterodactyloid pterosaur from the Late Jurassic to Early Cretaceous periods (Tithonian to Berriasian stages) of what is now the Purbeck Limestone of Dorset, England.

The genus name is derived from Platalea, the spoonbill, and Greek rhynchos, "snout", in reference to the distinctive form of the front of the skull.

Plataleorhynchus is based on holotype NHMUK R.11957 (earlier BMNH R.11957), an incomplete anterior upper jaw with teeth found in a chalkstone quarry near Langton Matravers.

This jaw is notable because it expands to form a circular, spatula-like shape at the front, holding 22 narrow teeth that point sideways.

Although Plataleorhychus would have been similar in size to large gnathosaurines like Gnathosaurus, its skull length was estimated at a minimum of 40 centimeters (15.75 in), the different shape of its spoonbill, presence of an apparently horn-covered pad on the palate, and smaller teeth suggest it did not feed in the same way, perhaps stirring up water-dwelling animals from muddy or weedy environments.