The analyse of the Turkish interest groups in Brussels puts in evidence a gap between the currently hazardous Turkey-EU membership process and the strong integration of these groups in the EU political arena in Brussels. However, this integration still refers to conceptions and practices which remain focused on the protection of national stakes. These statements are a good incitement to think about ways and means to penetrate and to grasp the Brussels arena. Analysing individual socialisation and the specificity of some sectors, it is possible to assess the integration logic to the EU environment and thus to consider the Europanization process of Turkish interest groups.L'analyse des groupes d'intérêts turcs présents à Bruxelles fait appara...