The present study aims to examine the quality of the role played by the Arbaeen pilgrimage in promoting the unity of the Islamic Ummah. Now, the main issue is how such a community can play a role as a unifying factor among Muslims and freedom-seekers of the world? This study was conducted using a descriptive-analytical method based on library resources and aims to explain how this pilgrimage plays a role as a unifying factor. The study's findings are that the realization of such unity is achievable in light of the centrality of the guardian of God in cultural, political, economic, social and security dimensions. This unity is achieved thanks to the collective movement towards divine ideals and human values ​​among the Islamic Ummah, followers of other divine religions and free people of the world. A movement whose condition is to renounce tyrants and criminals and also to be free from the domination of the enemies of humanity. The effort to re-examine the teachings of the Arba'in pilgrimage and achieve unity among Islamic societies through the blessings of these teachings is doubly necessary given the current conditions and the arrogant regime's invasion of Islamic countries.