Eastern Ecuador, north-eastern Peru, south-eastern Colombia, extreme southern Venezuela (southern Amazonas), and upper and middle Amazonian Brazil (east to lower R Negro and, south of Amazon, to lower and middle R Tapajós and R Curuá).
 
Population
Estimated population is unknown (2010).
Black-necked Red Cotinga (Phoenicircus nigricollis) [XC274949]
by Felipe Arantes from Morona-Santiago: Taisha, Ecuador (call)
Black-necked Red Cotinga (Phoenicircus nigricollis) [XC13474]
by Sidnei Dantas from Shiripuno Amazon Lodge, Huaorani reserve, border of Orellana and Pastaza, Ecuador (call)
Subspecies
Forms a superspecies with Guianan Red Cotinga (Phoenicircus carnifex) and could perhaps be considered conspecific.