Nystalus is a genus of puffbirds in the family Bucconidae.

The genus Nystalus was introduced in 1863 by the German ornithologists Jean Cabanis and Ferdinand Heine.

[1] The genus name is from Ancient Greek nustalos meaning "drowsy".

[2] The type species was designated in 1882 as the caatinga puffbird by Philip Sclater.

This Piciformes-related article is a stub.