Muhamad Afiq Mohammad NadzreeMohamed Mihlar Abdul Muthaliff2024-05-312024-05-312021-09-09https://oarep.usim.edu.my/handle/123456789/18542Date: 9 September 2021 Platform: MSTeams, USIM Nilai, Negeri Sembilan, Malaysia.The attraction in the study of religion continues to develop in this era of globalization. Muslim scholars have pioneered the effort and signinifantly contributed works and achiements in the study of religion. Thus, this study aims to highilight the achievements of Rahmatullah Al-Kairanawi, a 19th century Muslim scholar who specialised in the study of religion. Exposure to contemporary and future researchers on the great treatises of Muslim heritage in study of religion is significance of this study. This study uses qualitative methods through content analysis of the previous research, books, papers and previous thesis related to Rahmatullah Al-Kairanawi. The study found that Rahmatullah Al-Kairanawi made the important contributions in strengthening and defending the Islamic faith from external threats such as extreme non-Muslims, in the 19th century. Keywords: history of religion, comparative religion, izhar al-haq, rahmatullah al-kairanawi.enhistory of religion, comparative religion, izhar al-haq, rahmatullah al-kairanawi.Article