The objective of this thesis is to examine if cultural differences in Basque Country and Wallonia can serve as an explanation to their divergence of corruption, in comparison to the rest of their respective countries. The study is carried through using a qualitative approach in combination with a theoretical framework that put emphasis on mainly cultural, but also historical, components to understand political organization and institutions. The difference of corruption levels in the Basque Country in comparison to the rest of Spain and Wallonia to the rest of Belgium, is evident. Therefore, this study strives to create understanding of the regional divergence by examining the differences in culture in these two regions compared to their respective countries in general. Can culturally related factors explain the variety of corruption within a country? The results indicate that it can, to a certain extent.