During the last four decades, demographic population of the GCC states have dramatically changed and become a concern among citizens and immigrants. The attraction of expatriates in the region has also caused some changes in the political, religious, social and cultural aspects. This paper aims to examine the partial impact of expatriates on the religious development in the region. The relationships of these religions and their patterns of coexistence. The region, therefore, will undoubtedly be one of the most important key areas that will attract the attention of the researchers concerned with the economic and demographic development or with religious dialogue.