Using data from surveys on "social quality survey questionnaires", carried out by the Asian Consortium for Social Quality between 2009 and 2011, this study investigates the causes of social exclusion in six Asian societies. About 6,460 questionnaires were completed and the analysis of the data reveals the features and the causes of social exclusion in these societies. The study concludes that the impact of social factors (marital status, parental relations, and personal relations with local communities) on social exclusion is stronger than the political and economical factors (including class stratification and lack of financial resources). The findings indicate that the lack of social capitals is the most significant cause of social exclusion in these societies.