Estrildidae, or estrildid finches, is a family of small passerine birds of the Old World tropics and Australasia. They comprise species commonly known as munias, mannikins, firefinches, parrotfinches and waxbills. Sometimes they are treated as a subfamily, Estrildinae, within the family Passeridae; Passeridae narrowly defined comprises the Old World sparrows. Despite the word "finch" being included in the common names of many of the species, they are not closely related to birds with this name in other families, such as the Fringillidae, Emberizidae or Passerellidae.