The policy brief “Advancing Regional Land Transport Connectivity Through Intergovernmental Mechanisms for Regional Cooperation in Asia and the Pacific: 2025” reviews progress under three international treaties implemented under the auspices of ESCAP: the Intergovernmental Agreement on the Asian Highway Network, the Intergovernmental Agreement on the Trans-Asian Railway Network, and the Intergovernmental Agreement on Dry Ports, drawing on outcomes of their respective 2025 Working Group meetings. It highlights achievements in five priority areas: infrastructure connectivity, operational connectivity, decarbonization, inclusive transport and digitalization. Through their work, the Working Groups highlight the need for capacity-building, institutional coordination, and regional cooperation to close infrastructure gaps, foster innovation, and ensure sustainable, resilient, and integrated transport systems across Asia and the Pacific.