Despite progress in health over the years in Cambodia, the number of malnourished children remains high, which may be associated in part with poor water, sanitation and hygiene (WASH) practices. To address gaps in knowledge on the association between WASH practices and the nutritional status of children, this study analyzed the relationship between WASH child-sensitive composite scores and the wasting child anthropometry indicators. The authors found a significant association, reinforcing existing knowledge of the need to align WASH and nutrition practices.