The fashion industry is undergoing a significant transformation propelled by the integration of Internet of Things (IoT) technologies into its supply chain processes. This chapter looks into the multifaceted impact of IoT on various stages of the fashion supply chain, from design and production to distribution and retail. By leveraging IoT devices such as RFID tags, sensors, and smart devices, fashion companies are enhancing visibility, traceability, and efficiency throughout the supply chain network. At the design and production stage, IoT-enabled systems facilitate real-time monitoring of inventory levels, production progress, and quality control, leading to optimized manufacturing processes and reduced lead times. Furthermore, IoT applications enable proactive maintenance of machinery, ensuring uninterrupted production cycles and minimizing downtime. In the distribution and logistics arena, IoT-driven solutions enable accurate tracking of shipments, allowing for timely delivery and improved inventory management. Real-time data generated by IoT devices enable predictive analytics, enabling fashion companies to anticipate demand fluctuations and optimize inventory levels across different sales channels. Moreover, IoT technologies are revolutionizing the retail experience by enabling personalized customer interactions, inventory visibility, and seamless omnichannel integration. Through the deployment of smart fitting rooms, interactive displays, and mobile applications, fashion retailers can enhance customer engagement and drive sales. This chapter provides a comprehensive overview of the transformative role of IoT in the fashion supply chain and discusses the opportunities and challenges associated with its adoption. By embracing IoT technologies, fashion companies can achieve greater transparency, agility, and sustainability across their supply chain operations, thereby gaining a competitive edge in today’s dynamic market landscape.