the history of Islam, families in which three successive generations served as judges are exceedingly rare. The Tanūkhī family is one of the most distinguished examples of this phenomenon: the father, son, and grandson were among the prominent judicial figures of the Abbasid Caliphate during the 4th and 5th centuries AH. Since a significant portion of the territories under their jurisdiction fell within Iranian lands, examining their lives and works—especially those of Qāḍī Abū ʿAlī al-Tanūkhī—provides a valuable foundation for studying the history of judicial practice and the legal system of Iran within the broader context of Islamic civilization. Using a descriptive–analytical method and drawing upon historical sources, this study introduces Tanūkhī’s biography and analyzes his two major works, Nishwār al-Muḥāḍarah and al-Faraj baʿd al-Shiddah. The analysis explores the ethical and behavioral dimensions of judges, Tanūkhī’s conception of justice, and the role of the judge within Islamic society. The findings indicate that through historical narratives, Tanūkhī articulates an ethical approach to judicial practice—one deeply intertwined with Iranian cultural values and Islamic principles. Thus, studying his works offers deeper insight into the intellectual history of law and judicial ethics in Iran.