Ethiopia, Kenya, Malawi, Mozambique, South Africa, Sudan, Tanzania [United Republic of], Zambia, Zimbabwe.
Vagrant to Eritrea.
Ethiopian Highlands, south-eastern Sudan and central Kenya south to eastern and southern Tanzania and Malawi; and central Mozambique to south-eastern Zimbabwe.
 
Population
Estimated population is unknown (2010).
Silvery-cheeked Hornbill (Bycanistes brevis) [XC429679]
by Peter Ericsson from Uswun Unga Scarp Fores Nat Forest Reserve, above Uluti, Udzungwa Mts., Tanzania (call)
Silvery-cheeked Hornbill (Bycanistes brevis) [XC372271]
by isaac kilusu from Nairobi, Nairobi County, Kenya (call, song)
Subspecies
Genus sometimes merged with Ceratogymna. In past, northern populations sometimes separated as subspecies omissus.