The purpose of this study is to point out the factors that promote and hinder the intention to apply TQM in petroleum and liquefied petroleum gas enterprises in Vietnam. The study was conducted based on survey data of 486 petroleum and liquefied petroleum gas enterprises in Vietnam with the respondents being members of the business leadership or the person in charge of quality management and collected during the period from October 2020 to February 2021.The results show that the factors (1) Perception of the effectiveness of TQM; (2) Perceived ease of use of TQM; (3) Perceived effectiveness of TQM compared to the old system; (4) The size of charter capital has a positive effect (5) The size of the labor force has a negative effect on the intention to apply TQM in petroleum and liquefied petroleum gas enterprises in Vietnam. The study also shows that the more modern the leaders in petroleum and liquefied gas enterprises in Vietnam are, the easier it is to make decisions to apply TQM. And vice versa, if they are traditional people, they will hinder intention to apply TQM in business.