A. BuydensAad OudtAage HellstrømAage HolmAaliyah PalestriniAaron PeirsolAaron RhindAart van WilgenburgAbbas QaliAbbey WeitzeilAbbie WoodAbby KaneAbdel Aziz El-ShafeiAbdelhakim BitatAbdelrahim Mohamed AbdelrahimAbdelrahman SamehAbderzak BellaAbdoul NianeAbdourahamane DiawaraAbdullah AbdulrahmanAbdullah Al-DooriAbdullah Sultan (swimmer)Abdulsalam Al GadabiAbdulwahab WerfeliAbdurahman Ali (swimmer)Abed Rahman KaakiAbel MuñozAbiola OgunbanwoAbrahm DeVineAchieng Ajulu-BushellAchmad DimyatiAda KokAdam Barrett (swimmer)Adam Brown (swimmer)Adam Faulkner (swimmer)Adam Klein (swimmer)Adam LucasAdam ManiaAdam MoncherryAdam Peaty