The incident on 26 December 2004 draws public attention on earthquake hazard in Thailand. However, landslide hazard is the natural hazard that happens almost every year and causes economics and life losses. In order to manage the land properly after tsunami incident, landslide hazard zoning needed to be done. Department of Mineral Resources in corporation with Geotechnical Engineering Research and Development Center (GERD), Kasetsart University is responsible for the project of developing landslide hazard map in 6 provinces affected by Tsunami. One of the important analyses that needed to be made is prioritization the previous and existing landslide hazard areas. The study was done in 6 provinces including Ranong, Phang-nga, Krabi, Phuket, Trang, and Satun (Fig. 1). 220 locations of previous and existing landslide area were investigated in order to collect the data for various analyses including the risk prioritization of these areas.