The convergence of sustainability principles and advanced design paradigms has driven a significant evolution in contemporary architecture, particularly within the realm of green interior architecture. This paper thoroughly examines the latest trends shaping this field, focusing on how smart systems are enhancing environmental stewardship and user experience. As awareness of the ecological impact of architectural practices grows, designers are increasingly adopting innovative strategies to reduce environmental harm while improving occupant comfort and well-being. The discussion on green interior architecture now includes diverse considerations such as material selection, energy-efficient technologies, biophonic elements, and adaptive reuse practices. By utilizing sustainable materials like reclaimed wood, recycled plastics, and low VOC paints, designers are not only conserving resources but also creating healthier indoor environments. Additionally, incorporating biophonic design principles, which draw inspiration from nature's patterns and processes, supports occupants' psychological well-being and cognitive function. Alongside these sustainable design strategies, the integration of smart systems has become a transformative element in interior architecture. Advances in IoT, sensor technology, and automation enable designers to implement intelligent solutions for energy management, lighting control, temperature regulation, and spatial optimization. These systems, through real-time data analysis and adaptive algorithms, allow buildings to dynamically respond to user needs while maximizing resource efficiency and operational effectiveness.  This paper highlights the synergistic relationship between sustainability, technology, and design in shaping the future of green interior architecture. It aims to inspire designers, architects, and stakeholders to adopt a holistic approach to interior architecture, one that goes beyond aesthetics to create spaces that are environmentally responsive and emotionally enriching.