Tourism is one of the major foreign exchange earners and main growth sector for many countries especially for the small islands which are rich with required natural and cultural resources. Currently, there is a growing trend in tourist arrivals in Sri Lanka. This study was conducted to find out most significance factors affect to the tourist satisfaction in Sri Lanka. The study was based on primary data; 300 respondents who are visited in Hikkaduwa, Unawatuna and Koggala in Galle District in Sri Lanka. The sample was collected by multistage random sampling method and data was gathered by employing structured questionnaire. The satisfaction index was created under principle component analysis. The data were further analyzed by descriptive and ANOVA methods. Findings showed that mediocre satisfaction of respondent towards environment, hospitality, and infrastructure and highly satisfied on attraction transportation and cost. Furthermore the results reveled that tourist satisfaction is significantly different from tourist zone and country of origin. Similarly, the research emphasizes there is no significant different of tourist satisfaction from gender, age group, education qualification and sector.