This project examined the current role of Hong Kong FDI in Southeast Asia. It did this through a focus on three economies (Thailand, Vietnam and Cambodia), where Hong Kong FDI has historically been important. Mekong Economics Ltd. was requested to conduct a questionnaire with managers of selected small to medium-sized Hong Kong-invested companies in Vietnam. Since the early 1990s developing economies have become increasingly open to FDI. The objective of the research was to understand the impact of FDI, and in particular that from Hong Kong.