Argentina, Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Paraguay, Peru, Suriname, Trinidad and Tobago, USA, Venezuela.
Eastern Colombia through central-southern Venezuela to the Guianas and south to eastern Ecuador and northern Peru eastern across north-central Brazil; south-eastern Peru, northern Bolivia, western and central Brazil and central Paraguay to extreme northern Argentina; also extreme south-eastern Brazil.
 
Population
Estimated population is unknown (2010).
Azure Gallinule (Porphyrio flavirostris) [XC777746]
by JAYRSON ARAUJO DE OLIVEIRA from Reserva do Setor S\u00edtio de Recreio Cara\u00edbas-Goi\u00e2nia, Goi\u00e1s, Brazil (song)
Azure Gallinule (Porphyrio flavirostris) [XC108241]
by Bernabe Lopez-Lanus from Estancia La Clarita, Ruta 40 entre 41 y 42, Galarza, Corrientes, Argentina (call)
Subspecies
Formerly listed as Porphyrio parvus, but this name preoccupied. Sometimes placed in Gallinula or Porphyrula.