Casiornis

Casiornis is a genus of South American birds in the tyrant flycatcher family Tyrannidae.

The genus contains the following two species: {| class="wikitable" |- ! Image !! Common name !! Scientific name !! Distribution |- |120px ||Rufous casiornis ||Casiornis rufus|| Argentina, Bolivia, mid-central Brazil, Paraguay, and northeastern Uruguay |- |120px ||Ash-throated casiornis ||Casiornis fuscus||northeastern Brazil. |- |}