Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Venezuela.
Amazon Basin from eastern Ecuador and south-eastern Colombia east to southern Venezuela, the Guianas and northern Brazil (east to Belém), and south to north-eastern Peru and northern Mato Grosso.
 
Population
Estimated population is unknown (2010).
Collared Puffbird (Bucco capensis) [XC257957]
by John V. Moore from Sucumb\u00edos: 'Sacha Lodge', n bank R\u00edo Napo, Ecuador (song)
Collared Puffbird (Bucco capensis) [XC394439]
by Rolf A. de By from BDFFP, Amazonas state, Brazil (song)
Subspecies
Birds from south-eastern Colombia to Ecuador and eastern Peru sometimes treated as subspecies dugandi, but this form is doubtfully distinct.