This article aims to discuss the traditions of the Hajj season in the Mandailing Natal community. The tradition of the Hajj season is a tradition that has been carried out by the Mandailing Natal community for a long time. The Hajj tradition has indeed become a sacred tradition for many people in Indonesia, one of which is the Mandailing Natal community. This study uses a qualitative research method with a sociological approach to religion. The main sources in this research are in-depth interviews related to traditions during the Hajj season in Mandailing Natal to several local figure such as Amirul Latif Lubis, Dedek Fauzi, Marwansyah Lubis, and Yusuf Akbar. While supporting sources can be obtained from books, journals, and other scientific research that are relevant to the themes discussed. The results showed that there were three major traditions during the Hajj season in Mandailing Natal, namely: Marbante, Mangalomang, and Khataman Quran. Marbante is a tradition of slaughtering sacrificial animals (cows or buffaloes) which are then distributed to the surrounding community. But nowadays this tradition is not only carried out during the Hajj season, but on other major celebrations. Mangalomang is a tradition of cooking lemang together in one of the residents’ houses. Usually this tradition is carried out at the time of entering the month of Ramadan and ahead of Eid al-Fitr. Khataman Quran is a tradition that is carried out by reading the Quran together at night, and finishing reading it that same night. In addition, the tradition of the pilgrimage season in Mandailing is also a way to show social class in society in Mandailing Natal.