The rapid rise of digital technology is transforming the global financial landscape, with financial technology emerging as a major driver of efficiency, inclusion, and innovation. However, its contribution to green finance and environmental sustainability remains insufficiently explored, particularly in emerging economies. This study examines the long- and short-run effects of financial technology on green finance using Principal Component Analysis and Autoregressive Distributed Lag models, based on panel data from 2000 to 2022. The findings reveal that financial technology exerts a significant positive influence on green finance in the long run, while short-term effects are relatively weak, suggesting that sustainability benefits from digital innovation take time to develop. Policy and regulatory frameworks play a decisive role in shaping these outcomes, with considerable variation across countries. The study highlights the need for emerging economies, particularly in Africa, to establish coherent and stable regulatory systems that harness financial technology as a catalyst for sustainable finance and inclusive green growth.