Absract:We discussed in this thesis the maghrebian entrepreneurial ship in Paris, This capital is known by its cultural diversity . the starting point was the association’s activities that make the business men that we meet. We have identified some entrepreneurial network. These network have as missions to federate des efforts of the maghrebian entrepreneurs to conterbalance the concurrents in France and to guarantee the best conditions for the entrepreneurial return to tha origin country in maghreb.We evoked also in this doctoral work, the aspects of maghrebian diasporas, and the difficulties to transmit the original cultures to the younger generations . the acting with the double culture and or the assimilation full integration in the host society (the frensh community) .We studied also some economic consequences of creating company in the origin country (Tunisia) by the maghrebian business men. Especially the economic desintegration or the integration through out the entrepreneurial establishement either creating compagnies or by some partenarship.Kee words: entrepreneurship, associations, network, diasporas, maghrebian, Paris, identities, culture, economic integration,