Cyrtonyx is a bird genus in the New World quail family Odontophoridae.

The genus Cyrtonyx was introduced in 1844 by the English ornithologist and bird artist John Gould.

[1] The name combines the Ancient Greek kurtos meaning "curved" and onux meaning "nail" or "claw".

[2] The type species is the Montezuma quail (Cyrtonyx montezumae).

This Galliformes article is a stub.