This study aimed to identify the implementing degree of Total Quality Management (TQM) principals by Academic Departmental Heads (ADH) at the Najran University from faculty members' perspectives. It also aimed to determine significant differences between the average estimate of sample section of faculty members about the implementing degree of TQM principles by ADH attributable to the study variables (gender, faculty, and academic rank and experience years). The study sample consists of 200 faculty members. A questionnaire divided into six domains (44 items): (effective leadership, make decisions based on facts, strategic planning, participation and teamwork, focus on the satisfaction of the beneficiary, and the continuous improvement and excellence). The most significant outcome revealed from this study, that the implementing degree of TQM principles was average (68.4%). Results also have shown statistically significant differences at the level (a = 0.05) in the responses of faculty members about assessing the implementing degree of Total Quality Management (TQM) principals by Academic Departmental Heads (ADH) at Najran University according to the study variables (gender, academic rank and experience years). In light of these findings, the study has recommended several recommendations such as finding a clear functional description for the job of the academic ADH which can explain the tasks and specializations at Najran University.