Tanygnathus is a genus of parrots in the Psittaculini tribe, of the superfamily of Psittacoidea (true parrots).
Its species are native to Southeast Asia and Melanesia.
The genus contains four species:
Great-billed parrot, Tanygnathus megalorynchos
Blue-naped parrot, Tanygnathus lucionensis
Blue-backed parrot, Tanygnathus sumatranus
Black-lored parrot, Tanygnathus gramineus
Genetic analysis has supported reclassifying all 4 species under Psittacula, making Tanygnathus a synonym of the former genus.