Global and local organizations face many changes and challenges. These challenges have led to the emergence of new concepts in the management of organizations that seek to achieve the goal of survival and continuity in the world of competition by changing their traditional methods that are not commensurate with the challenges faced by organizations. Dealing with the challenges they face and overcoming them to achieve better performance. One of these tools is six sigma. The current study aims to identify the impact of six sigma to improve total quality management, a sample of 64 employees was selected randomly from Najaf cement plant, and the results indicate there is an impact of six sigma on total quality management.