373 (CCCLXXIII) ebile ngwaga wa go thoma ka Mošupologo, ngwaga wa bone ngwagengsome wa 370s, ngwaga wa bomasomešupa tharo ngwagengkgolo wa Ngwagakgolo 4, le ngwaga wa bomakgolo tharo masomešupa tharo ngwagengkete wa Ngwagakete 1.