Introduction: currently sexually transmitted diseases are a public health problem worldwide. Aim: to describe the knowledge related to sexually transmitted diseases in adolescents. Methods: a bibliographic review was carried out in which various scientific articles were compiled. For the collection of information, a search was carried out in databases such as PubMed, Cochrane, SciELO. Results: adolescents have a lack of knowledge and limited understanding about sexually transmitted diseases. Studies suggest teens generally don't have access to adequate information on the topic of sexually transmitted diseases, which contributes to the spread of these diseases. Conclusion: there is a weak association between the level of knowledge and the prevalence of sexually transmitted diseases in adolescents, that is, if the level of knowledge is high in the adolescent, the lower the prevalence of these diseases. Adolescents need to have adequate education within the home and educational institutions on sexuality issues and sexually transmitted diseases.