Library design is an interdisciplinary field of study and professional practice focused on the conceptualization, planning, and realization of physical and digital spaces that support the functions of a library. As an academic concept, it investigates the complex interplay between architectural form, spatial organization, technological integration, information access, and user behavior to create environments conducive to learning, research, community engagement, and the preservation of knowledge. Key characteristics include a user-centered approach, adaptability to evolving information technologies and service models, and the creation of inclusive, accessible, and sustainable spaces. Its significance lies in shaping the physical and virtual infrastructure essential for facilitating equitable access to information, fostering intellectual and social interaction, and enabling the mission of libraries in the contemporary information landscape.