El propósito fue evaluar si la auto-aceptación es un factor de riesgo del intento de suicidio en adolescentes. Participaron 665 estudiantes de 14 a 20 años (M = 16.7; DE= 1.36); 79 jóvenes (12%) reportaron intento de suicido, 24 fueron varones (M= 16.6 años; DE= 1.21) y 55 mujeres (M= 16.7 años; DE= 1.44). Se trabajó con dos muestras equivalentes, una con jóvenes que reportaron intento suicida (n= 79) y otra sin intento de suicidio (n= 69). Instrumentos: Escala de Auto-aceptación, con cinco dimensiones (rechazo-personal, insatisfacción personal, rechazo-carácter, auto-aceptación de aspectos positivos y auto-aceptación de aspectos negativos) y cinco preguntas sobre intento de suicidio. Los resultados mostraron que los predictores de auto-aceptación para el intento suicida fueron diferentes dependiendo del sexo de los adolescentes, la regresión logística sugiere que en los hombres la aceptación de sus aspectos negativos es un factor protector, pero en el caso de las mujeres, las que reportaron rechazo a su persona tienen un mayor riesgo de repetir el intento suicida. The purpose of this study was to evaluate self-acceptance in adolescents as a risk factor in attempted suicide. From one sample of 665 students between 14 and 20 years old (M = 16.7; SD = 1.36), only 79 adolescents (12%) reported attempted suicide, of whom 24 were men (M = 16.6) and 55 women (M = 16.7; SD = 1.44). The study included two sample groups, one a group of young people who had reported suicide attempts (n = 79), the other group was composed of people who had not reported suicide attempts (n = 69). A self-acceptance questionnaire which evaluated five dimensions (personal rejection, personal dissatisfaction, character dissatisfaction, self-acceptance of positive aspects and self-acceptance of negative aspects) was administered, and subjects were asked five questions about suicide attempts. The results showed that self-acceptance predictors of suicide attempts were different between the sexes: logistic regression suggests that self- acceptance of negative aspects is a protective factor for men; women who reported personal-rejection have an increased risk of repeating suicide attempts.