This is the seventh report in the Global Evidence Review on Health and Migration (GEHM) series. The publication examines how health systems are responding to the health needs of migrant and displaced populations in the context of climate change. Drawing on a review of 95 health system interventions across WHO’s six health system building blocks, it highlights current approaches, evidence gaps, and opportunities for strengthening migrant-inclusive and climate-resilient health systems. Key findings include the adaptation of existing interventions to new scenarios as well as innovative new practices. The review also identified main gaps in the evidence, particularly regarding longer-term interventions, broader planning and preparedness, and building resilience into health systems. Policy considerations are proposed to support more adaptive, inclusive, and coordinated responses to the health impacts of climate change on migrant and displaced populations. These include proactive long-term strategies to ensure migrant-inclusive health systems through a whole-of-route approach, and meaningful engagement of affected communities in policy, planning, and delivery. Ensuring that health systems are both migrant-inclusive and climate-resilient is critical for advancing health equity and system preparedness in an increasingly unstable climate.