Composite materials have gained significant attention in modern industries due to their outstanding properties and wide-ranging applications. The emergence of advanced fabrication methods, such as additive manufacturing and automated fiber placement, enables the tailoring of structures to meet specific design needs beyond the scope of traditional materials and techniques. Despite these advances, challenges remain in designing and validating composite structures, mainly due to limitations in existing methodologies and analysis tools. The proposed Mini-symposium, titled “Multi-Scale Advanced Modeling for Analysis and Design of Composite Structures Including Variable-Angle Tow,” aims to provide a comprehensive overview of the current state-of-the-art and future directions in simulating advanced manufacturing techniques and composite structures. This forum will bring together scientists and researchers to exchange ideas and share recent developments in the modeling and design of classical laminates and variable-stiffness composites produced through additive processes. The symposium will cover topics such as the development of beam, plate, and shell models; multi-scale methodologies bridging micro- and macro-scale behavior; homogenization techniques; and capturing complex interactions across different length scales. A key focus will be on addressing challenges related to modeling manufacturing defects, uncertainty in material properties and loading, and their implications for design optimization. Additional areas of interest include simulation of additive manufacturing processes, failure and damage modeling, delamination, robust design, and surrogate- or AI-based optimization methods. This Mini-symposium aims to foster interdisciplinary dialogue and promote knowledge exchange by offering a collaborative platform for innovative research. The event will support the formation of a network of experts committed to advancing composite materials research and driving their real-world application in engineering. Researchers from both academia and industry are invited to contribute their expertise. This Mini-symposium offers a unique opportunity to build connections and advance novel methodologies and tools for the analysis and design of additively manufactured composite structures.