Internationalization of multinational companies in the globalized context is a popular topic in the academic world and it is also a strong concern of CEO/managers. However, this topic has not been well discussed in the academic community in Vietnam that can be contextualized in the typical transition economy. This paper is designed to explore critical success factors (CSF) of internationalization of large Vietnamese companies that have contributed major revenue from the international market. Through interviews with CEO/managers of successful companies geared toward world markets, the CSFs of internationalization have been identified and categorized into groups in which each CSF has interaction with each other, and together have combined impacts on the success of internationalization. The research results provide a conceptual framework to analyze factors affecting internationalization of large Vietnamese companies. Thank to this conceptual framework, further exploratory and/or confirmatory research can be developed to locate more success factors of internationalization. In addition, some particularly critical factors of internationalization success of Vietnamese companies are found to be useful to both CEO/ managers and policymakers. CEO/managers can benefit from the research results by concentrate their limited efforts/resources in managing these CSFs, and policymaker may design CSF-based policies to boost the internationalization of domestic companies.

Abstract
1. Introduction
2. Literature Review
    2.1. Internationalization-Related Theories
    2.2. Factors Affecting Internationalization Processof Large Companies
3. Research Method and Data Collection
4. Results and Discussion
5. Conclusions and Limitations of theResearch
    5.1. Conclusions
    5.2. Limitations and Further Research
References

• Viet Quoc PHAM(Dean, Graduate School, University of Finance – Marketing, Vietnam) Corresponding Author
• Bao Khac Quoc NGUYEN(Dean of School of Finance. University of Economics Ho Chi Minh City)
• Thanh Quoc LE(Graduate School. University of Finance – Marketing, Vietnam.)