Nyanza (Chirungu: lake) kana gawa mutumbi wemvura wakakura samare uye uchiwanikwa padunhu. Muenzaniso ndidzo mvura dzinenge: Lake Malawi; Lake Victoria; Lake Tanganyika; Lake Chad. Nyanza inenge iri mvura yakaungana pasina kuvakirwa dhamu; izvi zvinosiyana neKariba Dam rakavakwa nevanhu. Zita iri rasiyanisa nekutaura kwemazuva ose kunoti nyanza negungwa zvimwechete. Zita iri riri kutoredzera pamutauro weChewa unoti Lake Malawi inonzi Nyanja - pano pavandudzwa kuti zviende kuChiShona. PaNhevedzwa dzeMvura nyanza dzinochengeta mvura isina munyu padunhu. Ziwumbe rine nyanza zhinji ndiro ziwumbe reNorth America rine nyanza dzinoti: Lake Erie; Lake Huron; Lake Ontario; Lake Superior; Lake Winnipeg; Lake Winnipegosis; Lake Manitoba nedzimwewo nyanza zhinji dzine mvura yakachena. VaChewa vanoti nyanja (n. Lake, sea, big water). VaWanga neVaTiriki vanoti inyanza (n. sea, ocean, lake; large body of water) kureva nyanza. VaFipa vanoti jemba (n. lake) kureva nyanza.