A person's weight may be perceived as an important aspect of his or her sexuality and a significant determinant of his or her interpersonal sexual experiences. However, researchers interested in body weight and sexuality have focused exclusively on sexual disorders found in individuals with eating disorders; consequently, little is known about people's beliefs about weight and sexuality, despite the individual and interpersonal significance of such beliefs. Undergraduates received information about a male or female, obese or normal-weight stimulus person and then evaluated that person along several dimensions related to sexuality. Participants believed that an obese man's sexual experiences would be highly similar to those of a normal-weight man. However, participants viewed an obese woman as less sexually attractive, skilled, warm, and responsive, and perceived her as less likely to experience desire and various sexual behaviors than a normal-weight woman. In addition, participants believed that an obese woman was less sexually attractive, skilled, warm, and responsive than an obese man.