AbstractThe language uniqueness of each region shows an identity of its region, so it is important to do astudy that can clearly show its uniqueness. This study aims to describe the phenomenon of language usage in several vernaculars in Southeast Sulawesi by applying a triangular dialectometry analysis. The instrument of this research uses dialectometry approach. Data collection methods uses a method of field fucking (direct field method). Data of this research is analyzed by using triangle dialectomentry method. This method uses the numbers as a basis for sorting. The results showed that the overall observation point that analyzed by using dialectometry, entered in the four formulation categories, namely the formulation below 20% (no language and dialect differences, ie between the Wakatobi language Kaledupa dialect and Tomia dialect), formulation 31-50% (the difference subdilek, that is between Pancana Language and Kioko Language), formulation 51-80% (dialect difference, ie between the Wakatobi language, Tomia dialect and Pancana language; Pancana language and Wakatobi language, Kaledupa dialect; Kioko language and Wakatobi language, Tomia dialect; Wakatobi language, Tomia dialect and Cia-Cia; Cia-Cia Language and Kioko Language; Kioko Language and Tolaki Language), and formulations 81 and above (language differences, between Tolaki and Cia-Cia languages).