Application of GIS in Tourism Planning Davod Shojaee Department of Surveying, Faculty of Engineering Meibod Islamic Azad University, Iran Email: dshojaee@gmail.com There has been a huge development in information technology recently. Planning and decision-making in tourism development is becoming increasingly complex as organizations and communities have to come to terms with the competing economic, social and environmental demands of sustainable development. Geographical Information Systems (GIS) can be regarded as providing a tool box of techniques and technologies of wide applicability to the achievement of sustainable tourism development. Spatial (environmental) data can be used to explore conflicts, examine impacts and assist decision-making. Impact assessment and simulation are increasingly important in tourism development, and GIS can play a role in auditing environmental conditions, examining the suitability of locations for proposed developments, identifying conflicting interests and modeling relationships. Systematic evaluation of environmental impact is often hindered by information deficiencies but also tools for data integration, manipulation, visualization and analysis. GIS seems particularly suited to this task. In this study, examines the progress tourism related organizations are making towards the utilization of GIS and its integration with the principles of sustainable development in the Iran.