This empirical study focuses on cultural influences on management styles related to Vietnamese society in the city of Houston which can help to increase self-awareness; and promote positive interaction with managers from diverse cultural backgrounds. It provides data which may be needed by managers from other cultures so that they may adjust their approach to Vietnamese culture which can open new opportunities to expand and accelerate their business growth and profitability. An understanding of Vietnamese cultural values will not only provide insight into the Vietnamese character and background which accounts for their management styles, but may also help bridge the cultural gap and implement processes that can have a positive impact on the business community. Results of the empirical study indicated that there are significant differences in Vietnam cultural dimensional indices between Hofstede in 2001 and this study. The power distance index, particularly, was changed from high power distance (found by Hofstede 2001) to today's finding of a very low power distance culture. The individualism scores swung from a relative collectivist to this study's finding of strongly individualistic. The long-term orientation score was also changed from high long-term orientation to this study's finding of relatively short-term oriented. This study's masculinity score was roughly equivalent to Hofstede's masculinity score. In addition, the results of an empirical study also indicated that the Vietnamese management style is not significantly different from the American. Both American and Vietnamese managers place significant emphasis on supervisory style, decision making, and control mechanism the difference seems to be that the Vietnamese managers also place a higher degree of emphasis on communication pattern than do their American counterparts. Control mechanism and paternalistic orientation styles seem to be appropriate with the Vietnamese culture and can be effective in family business or small-scale organizations. In today's knowledge based global economy, an understanding and appreciating of cultural differences have become critically important to cross-cultural management. When cultural differences are properly understood and appreciated it helps to increase self-awareness, and promote an effective business relationship which can result in greater cooperation among business men and women from diverse cultural backgrounds.