The Internet of Things (IoT) technology offers unprecedented opportunities to interconnect human beings as well as Machine-to-Machine (M2M), whereby sensors and networks allow all ‘things’ to communicate directly with each other to share vital information allowing us to have an instrumented universe where accurate data is readily available to inform optimal decision making. The IoT is about to enable a range of new capabilities and services far beyond today’s offerings. It will fundamentally change how people go about their lives. According to Gartner, the number of objects connected to the Internet is set to reach more than 20 billion by 2025. Cisco estimates the number will be close to 26 billion objects by 2023. Others believe the actual number will be even higher with the assumption that any object with a simple micro controller and on-off switch will be connected to the Internet in the near feature. The scale of the IoT is set to have a major economic, social and environmental impacts; the intersection of which forms the future sustainable growth. The International Workshop on Internet of Things: Networking Applications and Technologies (IoTNAT 2023) Symposium will be held in conjunction with The 6th International Conference on Fog and Mobile Edge Computing (FMEC 2023). The IoTNAT 2023 Symposium aims at soliciting original ideas on the broad area of IoT including challenges and opportunities, concepts and applications and future trends. The Symposium aims to facilitate discussions among academics and IoT practitioners and make positive contributions to the field. Authors are invited to submit original, unpublished manuscripts. Submitted papers should be in accordance with IEEE format, and will be reviewed by at least two expert reviewers in terms of relevance, originality, contribution, correctness, and presentation.