Muhammadiyah and Wahabi groups are revivalist Islamic movements, which in their struggle are both against heresy, so that their similarities make them look the same, some even say that Muhammadiyah is part of Wahhabism. then what is the difference in understanding heresy in the view of Muhammadiyah and Wahhabis. The methodology used in this research is Qualitative (Library research). Literature research that uses a comparative approach. By collecting all the materials for books, journals, reference papers related to the understanding of Muhammadiyah and Wahhabism about the heretical hadith. Then the data is reviewed, criticized, analyzed critically and comparatively, then a conclusion is drawn. As for the findings; First, in Muhammadiyah's ...