Coastal and marine areas have a great importance for countries. Turkey has a wealth of coastal areas and an abundance of their coastal resources. Turkey is surrounded largely by sea. So coastal and marine areas are so important for Turkey. There is an intensive information sets including sea bed, sea surface, coastal areas, sea and coastal border about the marine areas. These informations can be spatial and non-spatial data and they are needed to manage by an information system. Because a vast variety of spatial and non-spatial data such as deep discharge lying through the sea bed or pipelines (oil, natural gas, transportation), sand extraction areas for sand ships, secure routes and holding areas or anchorage for petroleum tankers, fishing areas, conservation areas and their borders for sea ecosystem are required for a sustainable marine and coastal management. Marine spatial and non-spatial data are needed for a sustainable environmental management of marine and coastal areas in Turkey. So these areas must be surveyed and registered with their data. Registration of marine and coastal areas and related rights and boundaries similar to terrestrial areas is a legal, social and economical requirement and also is required for sustainable marine and coastal management. In this study, the city of Trabzon was chosen as the study area. The aim of the study is to demonstrate how sustainable management of marine cadastre can be accomplished with support of information technologies. Geographic Information Systems (GIS) have been proposed for an ideal management of marine and coastal areas.