Geographical Information System (GIS) is an invaluable decision support tool, designed to address spatially related problems for management of natural resources. The power of GIS lies in its ability to visualize and relate various types of georeferenced spatial and non-spatial data allowing users to find the hidden patterns and connections between them. In India, use of GIS in fisheries management is yet to find its rightful place. An effort has been made in the present study to develop fisheries GIS for Greater Mumbai region of Maharashtra state.