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) [XC561351]
by Niels Poul Dreyer from Laguna Peregrinos, Sendero de la Cotinga Roja, Colombia (call)
Black-necked Red Cotinga (Phoenicircus nigricollis) [XC702911]
by Guilherme de Melo Becher from Brisas de Pamplonita, Piamonte, Cauca, Colombia (call)
Subspecies
Forms a superspecies with Guianan Red Cotinga (Phoenicircus carnifex) and could perhaps be considered conspecific.