Angola, Cameroon, Central African Republic, Congo [The Democratic Republic of the], Congo [The Democratic Republic of the], Equatorial Guinea, Gabon.
Three apparently disjunct populations: south-western Cameroon east to western Central African Republic and south to south-central Gabon; southern PRCongo, northern Angola (Cabinda) and extreme south-western DRCongo; and western Angola (Uige south to Huíla).
 
Population
Estimated population is unknown (2010).
Falkenstein's Greenbul (Chlorocichla falkensteini) [XC815859]
by Jaap van der Waarde from Muxima (near Lucala), Quissama, Bengo, Angola (song)
Falkenstein's Greenbul (Chlorocichla falkensteini) [XC834274]
by Arnon Dattner from Yaound\u00e9, valley between Emama and Febe village, Cameroon (alarm call, call)
Subspecies
Has in the past been suggested as forming a superspecies with Yellow-bellied Greenbul (Chlorocichla flaviventris), but subsequent studies have not supported such a relationship.
The following 2 subspecies are recognised:
viridescentior Sharpe, 1904 - Southern Cameroon (River Ja region).
falkensteini (Reichenow, 1874) - Western Cameroon and Central African Republic to central Angola.