In a global context grappling with systemic challenges such as climate change, resource depletion, and technological inequality, the concept of the "twin transition" - the integration of digital and green transitions - has emerged as a key strategic orientation for many nations, including Vietnam. While the digital transition aims to enhance managerial efficiency, foster innovation, and bolster competitiveness, the green transition pursues sustainable development, ecological integrity, and climate change adaptation. When pursued in synergy, the twin transition offers a profound opportunity to comprehensively restructure socio-economic sectors toward modernity and sustainability. Central to navigating this process is the role of law, which serves as both a regulatory instrument for social behavior and a foundational framework for transition policies. Within this context, land and environmental law are particularly decisive in anchoring the sustainability of the transition, as they govern the parallel objectives of digitizing resource management, optimizing land use, and minimizing environmental impacts. A well-designed legal architecture in these domains not only establishes a clear and transparent framework but also acts as a catalyst for technological innovation, administrative reform, and the pursuit of environmental justice. However, this paper argues that Vietnam’s current land and environmental laws face significant challenges in adapting to the twin transition, including a lack of synchronization, slow adoption of new technologies, and limitations in integrating environmental-technological considerations into land governance. Therefore, this study analyzes and proposes the necessary regulatory adjustments in these two key legal fields to meet the future demands of the twin transition in Vietnam.