Coastal resilience is the capacity of coastal systems, encompassing ecological, social, and economic components, to anticipate, absorb, accommodate, or recover from the effects of a hazard in a timely and efficient manner, including through preservation, restoration, and adaptation. As an academic concept and research field, it investigates the dynamic interactions within coastal zones, examining their vulnerability, adaptive capacity, and transformative potential in response to pressures such as sea-level rise, extreme weather events, and anthropogenic impacts. Key characteristics include its multi-scalar, interdisciplinary approach, integrating ecological, social, economic, and governance dimensions, and emphasizing dynamic processes and adaptive management strategies. Its significance lies in informing sustainable coastal development, enhancing disaster risk reduction, and guiding climate change adaptation policies to maintain long-term system function and human well-being.