This current study investigated the relationship between employees’ commitment and total quality management (TQM) in the public healthcare sector of Saudi Arabia. Furthermore moderating effect of knowledge management (KM) on the relationship between employees’ commitment and TQM has been examined. The core of the paper showed the effectiveness of public health sectors employee’s commitment to improve the TQM. Quantitative methodology for data analyses were employed to test the hypothesized model. A total of 259 questionnaires were distributed among the respondents, out of which 165 questionnaires were returned and only 154 were found useful in sense of completeness and usefulness for further analysis. The results of the analyses confirmed that there is significant direct effect of employees’ commitment to improve the TQM and KM moderates the relationship between employees’ commitment and TQM.