Heretofore most people affected by warts of the oral cavity were children, but during the past decade adults have become the most frequently seen patients with warts in the mouth. The popularity of fellatio among heterosexuals, teenagers, and adults has contributed to the spread of oral warts. Of epidemiologic interest is the observation that seldom are contacts of patients with oral warts found to have warts also. Seven cases are presented, and the methods of diagnosis and treatment are outlined.