“Exploring Planning and Design Principles in Traditional Islamic Architecture” Shaik Simalullah Department of Architecture Saveetha College of Architecture and Design, Chennai, Tamil Nadu, INDIA Syed Tajudeen Department of Architecture Saveetha College of Architecture and Design, Chennai, Tamil Nadu, INDIA Nagammal Jothilakshmy Department of Architecture Saveetha College of Architecture and Design, Chennai, Tamil Nadu, INDIA Abstract-Traditional Islamic architecture is a great reflection of the cultural, spiritual, and social ethics of the Islamic world. This research paper investigates the prominent planning and design principles which have defined traditional Islamic architectural style which focus on its holistic approach to space, functionality, and symbolism. The study aims to evaluate how the principles are rooted in Islamic beliefs, societal norms, and environmental considerations, providing timeless solutions to architectural challenges. Key principles such as spatial hierarchy, orientation towards the Qibla, emphasis on privacy, and the integration of natural elements are explored in detail. The research also focuses into the aesthetic aspects of Islamic architecture which are characterized by intricate geometric patterns, calligraphy, and floral motifs, which conveys both artistic excellence and a great spiritual meaning. The role of courtyards, mosques, madrasas, and residential complexes is examined to highlight their adaptability to different climates and their function as centres of community interaction. The paper draws on historical examples from iconic structures such as The Islamic Cairo Complex in Cairo, Egypt, the Alhambra in Spain, Qatar Islamic Cultural Centre Doha, Qatar, the Blue Mosque in Turkey, and the Great Mosque of Samarra in Iraq, illustrating how traditional Islamic architecture represents harmony, balance, and sustainability. By understanding these principles, the study offers insights into how they can inspire modern architectural practices while preserving cultural identity. This exploration underscores the relevance of traditional Islamic architecture in addressing contemporary challenges in urban planning and design. Keywords: Traditional Islamic Architecture, Planning Principles, Design Principles, Cultural Significance, Spiritual Values, Social Interaction, Geometric Patterns, Islamic Heritage, Architectural Evolution, Community Spaces, Sustainability, Symbolism, Islamic Identity, Built Environment. Journal of Xi'an University of Architecture & Technology Volume XVI, Issue 12, 2024 ISSN No : 1006-7930 Page No: 210