Since 9/11, attention to Islamic migrant organizations within Western countries has grown. However, the humanitarian activities of these organizations have received only limited attention. Hence, it is not yet clear why these organizations engage in humanitarian crises, which specific role Islam plays in their humanitarian engagement and which factors influence the scope of their activities in humanitarian crises. This paper aims to address these research questions by using approaches from sociology of organizations and presenting three empirical case studies from Germany. Particularly, it argues that although all three case studies are active in humanitarian crises the scope of their activities differs due to their differing organizational characteristics, member interests and external expectations.