The Internet of Things (IoT) has the potential to revolutionize the tourism service industry by enhancing customer experiences, improving operational efficiency, and creating new business opportunities. However, the adoption of IoT applications in this sector remains limited due to various factors. This study aims to investigate the factors affecting the use of IoT applications in the tourism service industry. A mixed-methods approach, combining surveys, interviews, and case studies, was employed to collect data from industry stakeholders. The findings reveal that technological factors, such as perceived usefulness, ease of use, and compatibility, play a crucial role in the adoption of IoT applications. Additionally, organizational factors, including top management support, organizational readiness, and competitive pressure, influence the implementation of IoT solutions. Environmental factors, such as government support, industry pressure, and customer demand, also contribute to the adoption of IoT in the tourism service industry. The study provides valuable insights for tourism service providers, policymakers, and researchers, highlighting the need for strategic planning, resource allocation, and collaboration to harness the full potential of IoT in this sector. The findings contribute to the existing literature on IoT adoption and offer practical recommendations for overcoming the challenges associated with implementing IoT applications in the tourism service industry.