Solomon Thekisho Plaatje (9 ngoMfumfu 1876 – 19 ngoNhlangulana 1932) wabe eyintatheli, usozilimi, usombusazwe, umhumushi kanye nombhali. UPlaatje wabe engumunye wamalungu abumba iqembu le-South African Native National Congress (SANNC) ngonyaka we-1912. Emva kokubunjwa kwe SANNC waqokwa ukuba nguNobhala Jikelele wokuqala kulo leli qembu, elagcina selaziwa njenge-African National Congress (ANC) ngonyaka we-1923. OkaPlaatje wazalelwa endaweni yaseDoornfontein ngase Boshof, eOrange Free State eyindodana yesi-6 kamadodana ayi-8. Igama likamkhulu wakhe kwabe kungu Selogilwe Mogodi, kodwa umqashi wakhe wabe emteketisa ngelika-Plaatje emva kwalokho umndeni leli gama njengesibongo sawo. Abazali bahke okwakungu Johannes and Martha babengamlungu esizwe saba-Barolong abakhuluma isiTswana futhi bengamaKrestu besebenzela izithunywa zenkolo kwamamishini eNingizimu Afrika. Ngesikhathi oseneminyaka e-4 abazali bakhe bathuthela kwimishini yamaLuthela yase-Pniel maduzane neKhimbali beyosebenzela isthunywa senkolo uErnst Westphal, kanye nowakwakhe uWilhelmine. Kuyo lendawo okaPlaatje wathola ithuba lemfundo eqondile efundiswa yilo ibandla lamaLuthela. Khona emabangeni aphansi wakhombisa ukukhalipha kobuchopho bakhe, yilapho uNkk. Westphal wamthatha wamfundisa ngasese ngokuthethe xaxa. UNkk. Westphal wamfundisa ukudlala ipiyano kanye ne vayolini waphinde wamfundisa nokucula.