During the recent decades, the world has experienced extensive cultural, social, economical, and political changes. Many scholars believe that in accordance with the changes in different areas of human life, taking a vast perspective to study culture and politics has become of necessity. Hence, in modern sociology of politics, globalization has turned to one of key concepts and variables in explaining political and social changes. On the other hand, social movements are among the phenomena of great development in the modern time, so that today the social movements throughout the world, including Iran, have been developing along with the growth in the various aspects of globalization. The findings of this research show that globalization has affected social movements in Iran. One major effect has been establishing strong link between these movements. The present article tries to answer this question, “What is common ground of the social movements in Iran together?” Our study shows that the democracy has been the common demand of all social movements in Iran and their linking point.