Objective: this study explores the moral reasoning of a group of soccer players from the Shipibo-Konibo indigenous people concerning the use of various fouls and misconduct in such sport’s competitions. Method: through qualitative interviews, using written cards that show conflict situations in soccer games, the cultural secrets used to gain advantage over rivals are first identified. Results: afterwards, the beliefs and ways of moral reasoning of these players on the use of such secrets, as well as common fouls in soccer games, are examined. Conclusion: the results show the complex relationship that the specific cultural beliefs and worldviews have with the universal processes of moral reasoning common to people from different cultures. Keywords: Soccer; moral reasoning; Shipibo-Konibo people; cultural secrets.