AfPO is an ontology that enables annotating African individuals and combines knowledge accumulated about existing populations with their genetic fingerprints in a standardized format. The AfPO can be employed to classify African study participants comprehensively in prospective research studies. It can also be used to classify past study participants by mapping them using a language or ethnicity identifier or synonyms.Aymen Ben Chaalia and Hamza Dallali are also contributors. However they don t have ORCIDs yet. H3Africa Phenotype Harmonisation working group members are also contributors.