Within the debates on curbing Kurdish ethno-nationalism in Turkey, the pro-Islamic approach puts emphasis on empowering the notion of 'Islamic brotherhood' between Turks and Kurds. The socio-economic approach, on the other hand, draws attention to improving the socio-economic status of the Kurds. By using World Values Survey data, this study tests these two distinct approaches. Logit estimates provide strong support for the socio-economic approach. Individuals with a better socio-economic status (i.e. higher level of education and income) are less likely to support Kurdish ethno-nationalist formations while religion-related factors do not have a significant impact. Some theoretical and policy implications are also provided. © 2010 Taylor & Francis.