This paper presents findings from a literature review and two case studies (The Honduras McGovern-Dole International Food for Education and Child Nutrition Project and the Malawi Tiwalere II Project) commissioned by the Child Health Task Force between November 2021 to August 2022 to inform the multisectoral approach to child health programming. The findings include successes and failures in implementing multisectoral action for children and lessons learned from collaborating across sectors. The aim of the paper is to assist the Child Health Task Force, in particular the Re-imagining the Package of Care for Children subgroup, in analyzing and identifying evidence, challenges, and knowledge gaps and articulate a research agenda on multisectoral child health approaches.