Bolivia, Brazil, Colombia, Ecuador, French Guiana, Guyana, Peru, Suriname, Venezuela.
Entire Amazon-Orinoco Basin, including south-eastern Colombia, southern and eastern Venezuela (north to south-eastern Sucre), the Guianas, eastern Ecuador, eastern Peru, northern Bolivia, and Amazonian Brazil; isolated population in south-eastern Bahia and northern Espírito Santo, in coastal eastern Brazil.
 
Population
Estimated population is unknown (2010).
Cinereous Mourner (Laniocera hypopyrra) [XC259068]
by Paul Coopmans from Orellana: 'Yuturi Lodge', s-bank R\u00edo Napo, Ecuador (song)
Cinereous Mourner (Laniocera hypopyrra) [XC427515]
by Jerome Fischer from RPPN Esta\u00e7\u00e3o Veracel, Porto Seguro-BA, Bahia, Brazil (canto)
Subspecies
No subspecies.
Genus often placed in Cotingidae, and possibly better treated in that family. Scientific name has often been misspelled as "hypopyrrha". Forms a superspecies with Speckled Mourner (Laniocera rufescens).