This research is motivated by the rise of the cancel culture phenomenon on social media, which often leads to mass judgment, the spread of shame, and violations of human dignity. This phenomenon indicates a tension between contemporary digital communication practices and Islamic ethical values, particularly the principle of tabayyun, the prohibition of backbiting, and social justice. In this context, Tafsir Al-Azhar by Buya Hamka was chosen as the main reference because it has a character of adabi ijtima'i which emphasizes the relevance of the Qur'an to modern social issues. This study aims to analyze the concept of communication ethics in Tafsir Al-Azhar and explain its relevance to the phenomenon of cancel culture on social media. The method used is qualitative research with a descriptive-analytical approach and thematic interpretation (maudhu'i). Primary data was obtained from Tafsir Al-Azhar, while secondary data came from books, articles, and previous research related to cancel culture and Islamic communication ethics. The analysis was conducted by collecting verses related to tabayyun, the prohibition of backbiting, slander, insults, and justice, then interpreting these verses thematically by referring to Buya Hamka's explanation. The results of the study indicate that the Tafsir Al-Azhar provides a strong normative foundation in dealing with cancel culture. The principle of tabayyun emphasizes the importance of verifying information, the prohibition of backbiting and insults maintains human honor, while justice requires that assessments be carried out objectively. Thus, cancel culture carried out without verification, without room for clarification, and without consideration of justice is contrary to Islamic communication ethics. This study confirms that the values of the Tafsir Al-Azhar are relevant as ethical guidelines in building a more just, polite, and responsible digital communication culture.