In this article, the author outlines the need for a critical research method in the field of health promotion to explore the determinants of health. These determinants, including healthy child development, employment and working conditions, and education, for example, underlie many of the health issues that individuals experience. They are, in turn, influenced by nebulous factors such as patterns of inequality, and cultural norms, which are difficult to research using conventional methodologies. The author provides an overview of critical ethnography as a method for health promotion research. She describes specific data collection and analysis techniques, with the addition of critical discourse analysis to add scope to ethnographic findings. She concludes with an overview of the congruence between critical ethnography and health promotion research, including a discussion of the differences between critical ethnography and participatory action research.