The Old World parrots (family Psittaculidae) are a family of birds belonging to the order Psittaciformes. This group is distributed in forested areas of warm regions in the Old World, with greater diversity in Australasia. This group includes lorikeets, lovebirds and many parakeets (although many so-called parakeets belong to the related New World and African parrots), with numerous endemics of island ecosystems and widespread taxa, includes numerous species used as popular pets. Overexploitation for trade and habitat loss have threatened numerous species, causing the extinction of some eight species in recent times and the fall of populations of other species — some of which are very poorly known today. Additionally, their trade and release has given rise to feral populations of different species in urban areas of warm regions worldwide.

The family comprises 187 extant species in 45 genera, generally classified in six subfamilies. The basal subfamily Psittrichasinae includes black-colored parrots of New Guinea genus Psittrichas (1 species) and Madagascar genus Coracopsis (4 species).

The type subfamily Psittaculinae includes parrots mostly distributed along Australasia. The pygmy parrots, the smallest parrots globally, belong to genus Micropsitta (6 species). Genus Alisterus (3 species), Aprosmictus (2 species), Polytelis (3 species), racket-tails of genus Prioniturus (10 species), genus Eclectus (5 species), Geoffroyus (3 species), Psittinus (2 species), Tanygnathus (5 species) and the Old World widespread genus Psittacula (16 species, of which 2 extinct) are part of this clade, as well as three historically extinct genera from the Mascarene islands.

The subfamily Psittacellinae includes tiger parrots of genus Psittacella (4 species), a clade endemic to New Guinea.

The subfamily Platycercinae is endemic to Oceania. The terrestrial genus Pezoporus (2 species), genera Neopsephotus (1 species), Neophema (6 species) and Lathamus (1 species) are endemic to Australia. Genus Prosopeia (3 species) is endemic to Fiji, Eunymphicus (2 species) to New Caledonia and Cyanoramphus (9 species of which 2 extinct) is now best distributed in New Zealand islands. Ringnecks of genus Barnardius (1 species), rosellas of genus Platycercus (6 species), bluebonnets of genus Northiella (2 species) and other parrots of genera Psephotus (1 species), Purpureicephalus (1 species) and Psephotellus (4 species of which 1 extinct) are also endemic to Australia.

The subfamily Agapornithinae includes small, stocky, short-tailed parrots of the Old World. Genus Bolbopsittacus (1 species) is endemic to the Phlippines. Lovebirds of genus Agapornis (9 species) are distributed in Africa. Hanging parrots of genus Loriculus (15 species) are found in the Indian Subcontinent and Southeast Asia.

The subfamily Loriinae is found in Australasia. Fig parrots of genera Nannopsittacus (3 species) and Cyclopsitta (4 species) and budgerigars of genus Melopsittacus (1 species) are the basal birds of this clade. Most other species are commonly known as lorikeets, including genera Oreopsittacus (1 species), Charminetta (1 species), Hypocharmosyna (2 species), Charmosynopsis (2 species), Charmosyna (4 species), Vini (12 species of which 2 possibly extinct), Neopsittacus (2 species), Lorius (6 species), Psitteuteles (1 species), Parvipsitta (2 species), Chalcopsitta (5 species), Glossoptilus (1 species) and Trichoglossus (22 species).