The objective nf this paper is to identify the pattern of groundwater flow in the southern part of the Etosha Basin in northern Namibia by using the comprehensive knowledge of the chemical composition of groundwater in the Etosha National Park. The Etosha Basin, which extends from northern Namibia into southern Angola is the northwestern outlier of the large inland depocentre of the Kalahari Basin. For the characterization of the groundwater chemistry, the unit referred to is the equivalent percent concentration (meq%/1). Keyword: Calcium-magnesium bicarbonate, Calcrete, Exorheic drainage system, Green-coloured clastic sediments, Karst water system, Parent dolomitic rocks, Saline-alkaline clastics and Sodium chloride type groundwater.