Purpose: This study aims to design and propose a customized international training program for ASEAN countries based on competency-based education, following the six stages of the ASSURE model design. Originality: Korea is facing an opportune time to lead global health issues due to the increase in international recognition and demand for K-quarantine in response to the COVID-19 pandemic. Meanwhile, Southeast Asian countries are experiencing growing demand for COVID-19 response and improving the quality of life for their citizens. Although ASEAN countries have made progress in achieving universal health coverage by improving healthcare accessibility and expanding the scope of health insurance, there is a need for cooperation in strengthening healthcare systems and building healthcare human resources. Against this background, there is a need for a strategic health cooperation project to establish universal health coverage in ASEAN and to improve the specialized skills of local health and medical personnel through education programs. However, research on systematic models of international health education training programs using curriculum models is inadequate, and studies proposing ASEAN-customized international health education training program models are also insufficient. Methodology: Therefore, this study utilized content analysis to conduct a literature review of the current status of universal health coverage in ASEAN countries and surveyed the needs of participants in international training programs to develop an ASEAN-customized training program using the ASSURE model. Result: The study secured an education and training module based on bidirectional communication and designed an education process focused on the needs of the training participants. Finally, an ASEAN-customized competency-based education international training program was designed and proposed. Conclusion and Implication: The systematically developed education and training program can be utilized not only as an ASEAN-customized curriculum but also as basic data for developing a systematic model of international health education based on competency-centered education. It can also be applied as a guideline for developing educational curricula using curriculum models. Moreover, it can contribute to sustainable health cooperation between Korea and ASEAN countries.