Self-concept, although central to traditional psychology, has recently gained importance in the context of positive psychology. The Self-concept Form 5 (AF5) is one of the most used measures when it comes to the Spanish speaking context. However, there are no studies on its psychometric properties going beyond reliability in Peruvian populations. The aim is to present the psychometric properties of the AF5 multidimensional scale in Peruvian university students. A sample of 527 university students was recruited. The survey included, besides the AF5, measures of dispositional hope and life satisfaction. A confirmatory factor analysis was implemented, with adequate results, χ2 (395) = 1484.46, p < .01, CFI = .93, RMSEA = .07. Cronbach's alphas were also calculated (ranging from .73 to .82), as well as item reliability indicators. Finally, self-concept dimensions were correlated with hope and life satisfaction, and all of them showed to be positive and statistically significant. Results offer evidence of appropriate psychometric properties of the AF5 in Peruvian undergraduates, allowing future research in this context to deepen into the new picture that has drawn positive psychology into traditional psychology.