The use of multiple micronutrient powders for point-of-use fortification of foods has been suggested as an alternative to mitigate or overcome the constraints associated with supplementation and mass fortification. They are intended to increase the vitamin and mineral intake of infants and young children aged 6 to 23 months as well as preschool and school-age children aged 2-12 years. This guideline is intended to help Member States and their partners in their efforts to make evidence-informed decisions on the appropriate nutrition actions to improve the nutritional status of infants and children aged 6 months to 12 years. It will also support their efforts to achieve the Sustainable Development Goals, the global targets set by the Comprehensive implementation plan on maternal, infant and young child nutrition, and the Global strategy for women's, children's and adolescents' health 2016-2030. It is intended for a wide audience, including governments, nongovernmental organisations, health-care workers, scientists and donors involved in the design and implementation of micronutrient programmes and antenatal care services, and their integration into national and subnational public health strategies and programmes. This guideline provides global, evidence-informed recommendations on the use of multiple micronutrient powders for point-of-use fortification of foods consumed by infants and young children aged 6-23 months and children aged 2-12 years.