aspg-18-1138-1791423672 20261008014112 American Scientific Publishing Group admin@americaspg.com American Scientific Publishing Group Journal of Intelligent Systems and Internet of Things JISIoT 2769-786X 2690-6791 2021 4 1 Ahmed Abdelmonem Faculty of Computers and Informatics, Zagazig University, Zagazig 44519, Sharqiyah, Egypt Shimaa S. Mohamed Faculty of Computers and Informatics, Zagazig University, Zagazig 44519, Sharqiyah, Egypt In the industry 4.0 idea, new cutting-edge techniques like the Internet of Things (IoT) are advocated. There is still a long way to go before IoT is widely adopted in the circular economy. The goal of this research is to identify the most significant impediments to the integration of IoT in the circular economy in the manufacturing industry. For this purpose, survey research was carried out to provide a framework for the assessment of the hurdles to IoT adoption in the circular economy. This led to a new approach that combines the SWARA and TOPSIS methodologies based on MCDM. The SWARA model is employed to compute the weights of criteria, while the TOPSIS approach is used to rank different manufacturing businesses under the identified obstacles. 2021 56 68 1138 https://creativecommons.org/licenses/by/4.0/ 10.54216/JISIoT.040104 https://www.americaspg.com/journal/18/article/1138 https://www.americaspg.com/storage/3321.pdf