The fast-changing nature of supply chains across the world has made it more complicated, uncertain, and vulnerable to disruption, and thus real-time visibility and active risk management are vital to sustainable operations. The Internet of Things (IoT) has become a disruptive technology able to solve these issues by facilitating smooth connectivity, data collection, and automation of processes throughout supply chains networks. The paper provides insights into how the IoT can be used to improve supply chain visibility and reduce risks by combining smart sensors, cloud-based applications, and sophisticated analytics. IoT-created data streams in real-time facilitate inventory, transportation, and production follow-up to enable firms to spot deviations, predict bottlenecks, and react to threats more swiftly. Moreover, predictive insights with the help of IoT enhance decision-making in demand forecasting, quality control, and supplier performance management. The paper identifies resilient supply chains as one way through which organizations can harness the power of IoT to create supply chains that can adapt to dynamic market environments, environmental uncertainty and geopolitical interruptions. Industrial evidence of the use of IoT in manufacturing, logistics, and retail industries shows that the integration of IoT can significantly decrease lead times, enhance traceability, and compliance with regulations. Other challenges like cybersecurity threats, data integration problems, and high implementation costs that should be considered to maximize the potential of IoT are also highlighted in the discussion. In general, the results indicate that the IoT-based supply chain visibility is the solution that can not only benefit operational efficiency but also reinforce the risk management strategies, thus ensuring a competitive edge in any unstable global markets.