A scoping review conducted by researchers at the Mahidol Oxford Tropical Medicine Research Unit explores the ethics of healthcare for mobile and marginalized populations in Southeast Asia (SEA), as well as the ethics of research involving these populations. The review identified 18 papers with substantial bioethical analysis, focusing on concepts such as capability, agency, dignity, vulnerability, precarity, complicity, and structural violence. The research highlights the need for more empirical research to better understand the ethical issues in research, clinical care, and public health related to migration in SEA. The study emphasizes the importance of considering diverse factors and contexts in order to advance migration health ethics in the region. [Extracted from the article]