This report presents the findings of the ORIE economic evaluation on the cost-effectiveness of the WINNN programme. The aim of this report is to evaluate the cost-effectiveness of the WINNN-supported infant and young child feeding (IYCF) interventions and community-based management of acute malnutrition (CMAM) programme over the WINNN programme duration (2011–2017). The cost-effectiveness of the two interventions is evaluated from both a health services and a societal perspective.