The effectiveness and sustainability of bioshields as nature-based solutions for coastal protection depend heavily on the strength and coherence of governance, policy, and legal frameworks. This chapter examines various institutional architectures, regulatory instruments, and policy mechanisms that shape the management and implementation of bioshield initiatives across different governance levels. It analyzes the evolution of national and regional policies promoting coastal ecosystem conservation, disaster risk reduction, and climate adaptation, highlighting both enabling conditions and persistent governance gaps. Special attention is given to the integration of bioshields within Integrated Coastal Zone Management (ICZM) frameworks and international conventions such as the Ramsar Convention, the Convention on Biological Diversity (CBD), and the Paris Agreement. The chapter explores challenges related to cross-sectoral coordination, enforcement, and funding, which often hinder effective policy execution. It presents comparative case studies from Asian nations—such as Vietnam, India, and Indonesia—illustrating diverse governance models and policy innovations that link environmental protection with socioeconomic development. Furthermore, the role of decentralization, community co-management, and legal recognition of ecosystem services is discussed to enhance local ownership and compliance. By synthesizing legal and institutional perspectives, the chapter argues that adaptive, inclusive, and science-informed governance is vital to scaling up bioshield initiatives. It concludes with policy recommendations aimed at strengthening legal frameworks to ensure long-term coastal resilience through ecosystem-based approaches.