In business as elsewhere, “ugly people” are treated worse than ”pretty people.” Why is this so? This article investigates the ethics of aesthetic injustice by addressing four questions: 1. What is aesthetic injustice? 2. How does aesthetic injustice play out? 3. What are the characteristics that make people being treated unjustly? 4. Why is unattractiveness (considered to be) bad? Aesthetic injustice is defined as unfair treatment of persons due to their appearance as perceived or assessed by others. It is plays (...) out in a variety of harms, ranging from killing (genocide), torture, violence, exclusion (social or physical), discrimination, stigmatization, epistemic injustice, harassment, pay inequity, bullying, alienation, misrecognition, stereotyping, and to prejudice. The characteristics that make people treated unjustly are (lack of) attractiveness, averageness, proportion, and homogeneity. Furthermore, prejudice, psychological biases, logical fallacies, and unwarranted fear of disease are some reasons why unattractiveness is (considered to be) bad. In sum, this study synthesizes insights from a wide range of research and draws attention to aesthetic injustice as a generic term for a form of injustice that deserves more systematic attention. Having a definition, description, and explanation of the concept makes it easier to target the problems with aesthetic injustice. As the business world is an arena of ubiquitous aesthetic injustice business ethics can take the lead in identifying, explaining, and addressing the problem. (shrink)