This paper aims to clarify the regional variation with the spatial characteristics of living system of settlements in Bali Island, Indonesia. In the first place, we try to classify the region by historical and natural features of Bali Island. Bali Island can be divided into three regions, a mountainous region, a hilly region and a plain region. As a result of analyzing the spatial characteristics of living system of settlements for each region, the corresponding original living system is found. Moreover, a hilly region is clearly divided into northern and eastern parts. Since it is possible to consider that community development in Bali Island is fundamentally performed in order of mountainous - hilly - plain region, living system of settlements for each region is expected to show old and new features.