["International Journal of Finance &Economics, EarlyView. ", "\nABSTRACT\nClimate Finance has gained prominence as a vital instrument to support the global transition towards environmental sustainability. While existing studies primarily emphasise carbon dioxide reduction, relatively little is known about how climate finance affects broader ecological outcomes and the role of adaptation finance. This study examines the influence of climate finance—disaggregated into mitigation and adaptation flows—on multiple sustainability indicators across 33 Asian economies from 2000 to 2021. Environmental outcomes are measured through carbon dioxide, methane and nitrous oxide emissions, as well as the ecological footprints and the load capacity factor, thereby providing a multidimensional view of sustainability. To address endogeneity and dynamic effects, the analysis employs a dynamic panel approach using the two‐step system generalised method of moments. The results indicate that climate finance significantly reduces methane and nitrous oxide emissions, while enhancing the load capacity factor; its effects on carbon dioxide emissions and the ecological footprint remain limited. Adaptation finance has a stronger positive impact on ecological sustainability than mitigation finance, underscoring the importance of a balanced allocation between the two components. Economic growth, trade openness and industrial activity continue to increase environmental pressures, which calls for stronger governance frameworks and improved institutional mechanisms to ensure effective use of climate finance. By extending the scope beyond CO2‐centric analyses and distinguishing between mitigation and adaptation flows, this study contributes fresh evidence to the climate finance literature. The findings carry important implications for policymakers, emphasising the need to align financial allocations with the Paris Agreement and Sustainable Development Goals to achieve lasting sustainability outcomes.\n"]