This study discerns the drivers of household dietary diversity in the context of farmers evolving from subsistence toward commercial production, in the Greater Mekong Region (GMS). The results show that the Household Dietary Diversity Score (HDDS) is found to increase among the sites in a way that is roughly associate with their state of agricultural transition, though differing combinations of market orientation, specialisation, and intensification traits that describe such a transition suggest that the pathway to commercialisation, and dietary diversity, is not a linear one. »