The effective design of bioshields requires a comprehensive understanding of ecological, hydrodynamic, and geomorphological principles that govern coastal processes. This chapter outlines the scientific and engineering foundations of bioshield design, emphasizing the integration of ecosystem functionality with structural protection objectives. It explores key design parameters such as vegetation type, species composition, planting density, zonation, and spatial configuration relative to tidal regimes and shoreline geomorphology. By analyzing how different plant morphologies influence wave energy dissipation, sediment stabilization, and erosion control, the chapter establishes the importance of site-specific design approaches tailored to local environmental conditions. The discussion highlights the role of multidisciplinary assessment—combining ecological surveys, hydrodynamic modeling, and risk-based planning—to ensure bioshields achieve optimal performance under variable climatic and anthropogenic pressures. Case studies from Asia and other tropical regions illustrate successful design frameworks that integrate traditional ecological knowledge with modern restoration techniques. Attention is also given to scalability, maintenance, and monitoring as critical components of long-term bioshield efficiency. This chapter provides a practical blueprint for designing resilient and sustainable bioshields by synthesizing principles from coastal engineering, landscape ecology, and environmental management. It underscores that successful bioshield design must balance protection, biodiversity enhancement, and socioeconomic co-benefits to serve as a holistic nature-based solution for coastal resilience.