The main objective of the research was to know the relationship between social skills, self-concept and self-esteemin Peruvian high school students. The research approach was quantitative with correlational scope and non-experimental-transeccional type. The sample consisted of 324 teenage students from the last two years of high school from different schools in Lima, Peru. The results indicated a positive and medium relationship between social skills and self-concept, the physical, social, personal and sense of control self-concept which have the highest correlation index. A positive and medium relationship between social skills and self-esteem was also found, on the other hand, the relationship between self-concept and self-esteem proved to be large and positive. The evidence showed that men have higher scores in the three variables. Furthermore, adolescents in public schools and those who study with a competency methodology have greater self-concept. No differences were found according to the age of the participants.