AbstractOver the last decade, social and behaviour change strategies have increasingly been used to address human rights and child protection concerns, including harmful practices such as child marriage, female genital mutilation and violent discipline. Social and gender norms have also been recognized as key drivers of child recruitment. Nonetheless, the use of social and behaviour change strategies to prevent and respond to the recruitment and use of children in armed conflict has not yet been systematically explored or applied. Building on academic and practical sources, including findings from studies by the International Committee of the Red Cross and United Nations University, social and behavioural science theory, experiences from the Monitoring and Reporting Mechanism on grave violations against children, and academic literature, this article explores how social and behaviour change approaches can inform prevention of and response to the recruitment and use of children in armed conflict. The article concludes that social and behaviour change approaches can effectively inform prevention and reintegration efforts and can facilitate responses that bridge the humanitarian, development and peace nexus. Using social and behaviour change approaches can help to reveal why children are recruited from the perspective of key actors and entities across the socio-ecological framework in order to prevent the practice from becoming more accepted.