This HKH Call to Action is based on the HKH Assessment, which was drafted in response to requests from governments in the region, meeting a demand for a comprehensive assessment of the region’s mountains, environments, and livelihoods and proposes actions towards a shared vision for the future of the HKH region, in which its societies and its people are prosperous, healthy, peaceful, and resilient in a healthy environment. To realize this vision, this HKH Call to Action elaborates six urgent actions, including: 1) promote and strengthen regional cooperation at all levels to sustain mountain environment and livelihoods; 2) recognize and prioritize the uniqueness of the HKH mountain people; 3) take concerted climate actions; 4) take accelerated actions to achieve the SDGs, consistent with the nine mountain priorities; 5) take decisive actions to enhance ecosystem resilience; and 6) promote regional data and information sharing.