This Mini Symposium will present recent advances in computational mechanics for wave propagation, multiscale, and multiphysics simulations. The session will showcase state-of-the-art computational methods, novel material technologies, and advanced experimental characterization to develop resilience-enhanced engineering solutions. A primary focus will be on wave-control technologies, including metamaterials and metasurfaces designed through inverse design, nonlocal scattering theory, and multiphysics optimization. These innovations have achieved unprecedented capabilities in manipulating elastic, acoustic, and electromagnetic wave propagation, enabling strategies for seismic, blast, and vibration mitigation as well as tailored functionalities in optical and acoustic domains. The symposium will also feature computational frameworks for predicting material and structural behavior under extreme conditions. Highlights include nonlocal continuum formulations such as discretized peridynamics coupled with finite element methods for fracture initiation, crack propagation, and progressive collapse in brittle, ductile, and heterogeneous solids. Other contributions address soil-structure interaction models, absorbing boundary conditions for layered and anisotropic media, and probabilistic full waveform inversion for subsurface characterization. At the material scale, research on ultra-high-strength and fiber-reinforced cementitious composites uses high-resolution micro-CT to link pore-scale structures with macroscopic mechanical and thermal properties under blast, seismic, and thermal loads. These developments are complemented by multiscale fracture modeling integrating cohesive zone, virtual element, and phase-field methods grounded in experimental data. At the structural system scale, the session will cover wave–structure interaction modeling, structural fire performance assessment, and nondestructive monitoring for life-cycle safety management. Time-domain elastic wave formulations with enhanced absorbing boundaries improve large-scale and unbounded-domain simulations, while fire performance evaluations of composite systems support resilience-oriented design. By combining wave-control innovations, high-fidelity simulations, advanced material development, and experimental verification, this symposium presents a comprehensive vision for next-generation civil engineering systems.