Household food access is defined as the ability to acquire a sufficient quality and quantity of food to meet all household members’ nutritional requirements for productive lives. Household dietary diversity, defined as the number of unique foods consumed by household members over a given period, has been validated to be a useful approach for measuring household food access, particularly when resources for undertaking such measurement are scarce. This guide provides an approach to collecting and measuring household dietary diversity as a proxy measure of household food access.