Coturnix is a genus of eight extant species and two known extinct species of Old World quail. They are related to the francolins, jungle bush quail,  snowcocks  and rock partridges. Species of Coturnix and the aforementioned genera belong to their own monophyletic clade, Coturnicinae, a subfamily within the family Phasianidae. Some authors consider this clade, together with a sibling assemblage, the Gallininae (including the junglefowl,  long-billed partridge and Chinese bamboo partridge) warrants classification in its own family, Coturnigallusinidae.