From the stakeholder theory, the research evaluates the efficiency and impact of corporate social responsibility (CSR) implementation for various stakeholders including government, la-bor, customer, community on corporate reputation. A 2-stage Data Enveloped Analysis (DEA) model was employed using a quantitative method of questionnaire survey among a sample of 208 foreign direct investment (FDI) enterprises in Hanoi, Vietnam: Stage 1: Using DEA model to evaluate the efficiency of CSR implementation to improve the reputation of enterprises; Stage 2: Using multivariate regression model to assess the impact of CSR implementation on stakeholders in order to improve the reputation of enterprises. The result of the study should give managerial implications for the government and FDI firms in understanding the current state of CSR efficiency, as well as to formulate more target policies to promote FDI firms’ efficient commitment to CSR.