This paper will present two promising technologies: Geographic Information System (GIS) and Remote Sensing (RS) along with their application in groundwater exploration and hydrogeological investigations. Although this field is not very common in Pakistan but is being widely used internationally in almost all fields of life in general and in natural resources management particularly. The growth of GIS has been a marketing phenomenon of amazing breadth and depth and will remain so for many years to come. Clearly, GIS will integrate its way into our everyday life to such an extent that it will soon be impossible to imagine how we functioned before. Before discussing the applications of GIS and Remote Sensing in hydrogeological investigations, their brief introduction is presented.