Johannesburga is the singular genitive of Johannesburg.

JohannesburgN

Occasional

Norwegian Bokmål

JohannesburgNx

Nordsamisk-norsk ordbokdict-sme-nob/src/N_Propgeo_smenob.xml:22294Edit on GitHub Suggest

Case	Sg
Gen	Johannesburga / Johannesburg
Ill	Johannesburgii
Loc	Johannesburgas