The aim of this research is to present and validate the self-concept model of managers of Iranian government organizations. This study was conducted using a descriptive-survey method with a mixed (qualitative-quantitative) approach. In the qualitative section, the initial model was extracted and developed through the analysis of specialized interviews with management experts. In the quantitative section, the statistical population included senior, middle, and operational managers of Iranian government organizations. Using stratified random sampling based on Cochran's formula, 384 individuals were selected as the sample. The data collection tool was a standard questionnaire, the validity and reliability of which were assessed. Data analysis was performed using Smart PLS software. The results indicated that the functional, individual, and behavioral factors of self-concept, along with their skills and outcomes, significantly affect managers' self-concept. The findings of this research can greatly assist managers and organizations in enhancing managerial skills and increasing organizational performance effectiveness.