The paper was designed with the purpose of discovering the relationships among legal environment, corporate social responsibility (CSR) practices and business success. Data collection from 869 companies was processed with quantitative methodology; all of the respondents were identified to be working at the managerial level in Ho Chi Minh City and Binh Duong Province, Vietnam. The empirical outcomes indicated that legal environment significantly affects business success directly and indirectly the mediation of CSR practices; economic CSR, philanthropic CSR, legal CSR and environment CSR. Ethical CSR was excluded from the proposed model after exploratory factor analysis. By developing the awareness of CSR and encouraging Vietnamese corporates to practice on CSR activities, this study contributes to the local business’s further growth for better business performances as well as for the overall benefit of the society. Moreover, suggestions for future researches are also recommended to extend the related topics.