["The International Journal of Health Planning and Management, EarlyView. ", "\nABSTRACT\n\nObjective\nTo understand how current programmes and policies can be leveraged to improve maternal, infant, and young child nutrition outcomes (MIYCN) in Guinea.\n\n\nData Collection Methods\nStudy design. This study is part of a larger multiphase mixed methods study design. Theoretical framework. A systems framework developed by the United Nations Children's Fund (UNICEF) and an implementation science framework were used to guide this research. Phase 1. An in‐depth literature review of current programme and policy documents (2019–2022) targeting MIYCN through the water, sanitation, and hygiene (WASH), health, food, and social protection systems in Guinea was conducted. Phase 2. Semi‐structured interviews with stakeholders (n = 20) from each system were completed to explore stakeholders' knowledge related to pertinent programs and policies. Phase 3. Validation of findings was conducted using member checking.\n\n\nData Analysis Methods\nGrey literature documents and interview findings were analysed using content analysis guided by the systems framework and implementation science framework, respectively.\n\n\nResults\nPolicy documents across systems were all multisectoral and more than half (27/32) of evidence‐based programme modalities across systems were included in policies. Most (28/32) evidence‐based programme modalities were also being implemented in Guinea. Stakeholder interview findings revealed that programme implementation was the most salient barrier to operationalising evidence‐based programme modalities.\n\n\nConclusion\nFindings from our study indicate that policy and programme frameworks are strong but improved financial planning and vertical and horizontal programme planning may create a stronger enabling environment to support MIYCN in Guinea.\n\n"]