Introduction: The main purpose of this study is to explore the correlation between dimensions of perfectionism and self-concepts among school aged students in Egypt. Method: Two hundred-eighty four children (fifth and sixth graders) participated in this study. The mean age of the participants was 144.37 months, SD 6.36. Pearson correlation coefficients among dimensions of perfectionism and dimensions of self-concept were employed for data analysis. Results: Results indicated that Self-oriented perfectionism significantly correlated with Academic self concept and General self-worth in a positive direction. The correlation between Self-oriented perfectionism and Non-academic self-concept was not significant. There were also significant positive correlations between Compulsiveness and all self-concept subscales. Contrary to expectations, Socially-prescribed perfectionism was positively correlated with Academic self-concept. Discussion and Conclusion: For the 284 school-aged children in this study, most perfectionism and self-concept dimensions were positively correlated with each other. "Self-oriented perfectionism" was associated with an enhanced General self-worth and increased Academic self-concept in mathematics, reading and general school. Contrary to expectations, "Socially-prescribed perfectionism" and "Sensitivity to mistakes" were also significantly positively associated with Academic self-concept, although not with Non-academic self-concept or General self-worth. (Contains 1 table.)