This study aimed to identify the effect of Total Quality Management (TQM) practices on their dimensions on employee performance who worked for Qatar Ministry of Interior, with the moderating share of knowledge. The components of TQM include customer focus, employee participation, continuous improvement, leadership & good vision and operations manage-ment. The study uses a quantitative research, where 280 questionnaires are collected from respondents to obtain the necessary information for testing the hypotheses of the study. Multiple regression and gradient regression are used to analyze the research data. The results indicate that TQM practices with its dimensions had effects on employee performance through knowledge sharing. The results of this study contribute to develop and implement different strategic directions that enhance the performance of employees through the adoption of TQM and the dissemination of a culture of knowledge sharing.