This study continues to unpack how policy coherence facilitates progress toward achieving food and nutrition security (FNS). The review aimed to identify policy coherence indicators for FNS and provide inputs to the study “Developing Policy Coherence Impact Indicators for Food and Nutrition Security (Phase 2)–PCI2FNS” under the University of the Philippines Center for Integrative Studies – Food Security Program. Using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses approach, the research examined peer-reviewed articles from the Web of Science and Scopus databases, as well as reports from the Food and Agriculture Organization, the Organisation for Economic Co-operation and Development, and the International Food Policy Research Institute. Findings showed that despite the recognized importance of policy coherence, there remains a paucity of studies systematically addressing its measurement and implementation. Factors and mechanisms that enable coherence identified in the literature review were aligned with the indicators from the 2024 UNEP Policy Coherence for Sustainable Development Composite Indicator 17.14.1 Domains and the 2025 Global Alliance for Improved Nutrition Diagnosing Policy Coherence for Food Systems Tool. Furthermore, the indicators represent the dimensions of: (1) Cross-linkages and Monitoring, Evaluation, and Accountability; (2) Commitment and Continuity; (3) Coordination and Convergence, and (4) Consultation and Community Engagement. These dimensions of policy coherence serve as foundational elements for developing indicators that will inform the creation of a comprehensive framework to assess and enhance food and nutrition security.