In this paper, a framework for exploring the relationship between the moderating effects of organizational culture on TQM implementation and organizational performances was proposed and investigated using Alrahila Oil Services Company, Libya, as a case company. The study, which provides a whole new approach to the investigation of the relationship of variables, used qualitative and quantitative survey methods and the PLS program for its evaluation. The study showed a great potential for ensuring the survival and growth of Alrahila Oil Services Company, Libya, as well as other oil serving companies in Libya. The results of the study provided a substantial knowledge and scientific addition to this field as it established the moderating effects of organizational culture on the different TQM critical elements, as well as on the overall company’s performances. Training/educational development and continuous improvement (Hypothesis 3 and 5) as TQM parameters showed insignificant and negative influences on the relationship between different TQM critical elements and the overall company’s performance.