The main object of this research is to describe social exclusion in a comparative world perspective. Social exclusion is a main concern worldwide. Non-desirable social groups as neighbours are used as a proxy measure to answer three questions: who are the most excluded social groups, who are the excluders, and what are the main explanatory variables of social exclusion. Social exclusion, as a multidimensional phenomenon, is defined in relation to concepts such as stigma, discrimination, and prejudice. Social, economic, political and ideological-religious attitudes are used to construct the profile of the excluder. Social exclusion has been measured through three indexes of social exclusion, personal, group and total exclusion, since a main component analysis demonstrated that the degree of social exclusion varied depending on whether the excluded group was more or less based on personal decisions on one's behaviour taken by the individual. Based on theory and previous research, four main variables have been tested to explain social exclusion: social position, exposure to information, post-materialist values and perception of security. But other explanatory variables were also added to the analysis. EVS and WVS databases (from 1981 to 2014) have been used, though most of the analysis has been based on the last WVS-6 th wave on 59 countries with a total of more than 85,000 interviews.