Textile structures is **textile structures is** the academic concept and research field dedicated to studying the arrangement and configuration of fibers, yarns, and fabrics, and the fundamental relationships between these structural forms and the resulting material properties. This field investigates the hierarchical organization of textile materials, the influence of processing on structure at multiple scales (fiber, yarn, fabric, preform), and how these factors determine physicomechanical performance and functional attributes, enabling the design of engineered textiles for diverse applications.