This essay explores the concept of ambiguity out from an understanding developed by the French philosopher Simone de Beauvoir. She was one of existentialism’s leading exponents, and her work entitled Ethics of Ambiguity (2018[1947]) works as a starting point. The concept of ambiguity is further explored from an educational view, with the help of the Brazilian educationalist Paulo Freire who was influenced by the French existentialist thinking. The essay ends discussing some current themes in education, with the insights brought out by the explorations of the concept of ambiguity by de Beauvoirand Freire.