The aim of this study was to examine the relationship between Socially Prescribed Perfectionism (SPP) and the Big Five personality traits in a sample of 804 Primary School students between 8 and 11 years old (M=9.57; SD=1.12). The SPP subscale of the Child and Adolescent Perfectionism Scale (CAPS) and the Big Five Questionnaire for Children (BFQ-N), which evaluate the traits of Neuroticism, Extraversion, Openness, Agreeableness, and Conscientiousness, were used. The mean difference analysis showed that students with high levels of SPP scored significantly higher on Conscientiousness, Agreeableness, Extraversion and Openness, with small effect sizes for all cases. In contrast, no significant differences were observed in Neuroticism. Logistic regression analysis revealed that all personality traits, except neuroticism, whose results didn’t reach the statistical significance, significantly and positively predicted higher scores on PSP, with OR levels ranging from 1.01 (for Conscientiousness and Agreeableness) to 1.03 (for Openness and Extraversion).