Sexual harassment is intimidation, bullying or coercion of a sexual nature or the unwelcome or inappropriate promise of rewards in exchange for sexual favors. In some contexts or circumstances, sexual harassment may be illegal. It includes a range of behavior from seemingly mild transgressions and annoyances to actual sexual abuse or sexual assault.

Sexual harassment is a form of illegal employment discrimination in many countries and a form of abuse (sexual and psychological) and bullying. For many businesses, preventing sexual harassment, and defending employees from sexual harassment charges, have become key goals of legal decision-making.