This technical report was prepared by Nutrition International in November 2019 to provide the World Health Organization Guideline Development Group with additional cost-effectiveness analyses to support the guideline review process for the nutritional interventions update on Multiple Micronutrient Supplements (MMS) during pregnancy (released July 2020). This report includes custom cost-effectiveness analyses for 12 low and middle-income countries. It also serves as an additional resource for countries considering MMS in the context of implementation research.