Angola, Benin, Burundi, Cameroon, Central African Republic, Congo [The Democratic Republic of the], Congo [The Democratic Republic of the], Côte dIvoire, Equatorial Guinea, Gabon, Ghana, Guinea, Guinea-bissau, Kenya, Liberia, Nigeria, Rwanda, Sierra Leone, Sudan, Tanzania [United Republic of], Uganda.
Equatorial Africa from Guinea Bissau, Guinea, Liberia and Ivory Coast east to Nigeria, Central African Republic, Cameroon, Bioko (Fernando Po), Gabon, northern Angola, Congo, Zaire, southern Sudan, Uganda, Rwanda, Burundi, north-western Tanzania and western Kenya.
 
Population
Estimated population is unknown (2010).
Great Blue Turaco (Corythaeola cristata) [XC265437]
by Pawe\u0142 Szyma\u0144ski from Bigodi Swamp, southeast of Kibale NP, Bunyoro, Uganda (call, song)
Great Blue Turaco (Corythaeola cristata) [XC781312]
by Marc Languy from Minziro, Bukoba Rural, Kagera Region, Tanzania (duet)
Subspecies
Eastern African birds formerly separated in subspecies yalensis.