This annual publication is the NTS Centre’s reflections on the events of the past year and contemplations on issues of non-traditional security in Southeast Asia and beyond. The NTS Year in Review 2023 comprises articles which reflect on the impact of recurrent and emerging NTS challenges on our nations and communities and discusses the intersections of different NTS issues in the region, such as climate change, food security, humanitarian emergency, health security, energy security, and nuclear safety. These articles draw out some of the potential pathways to addressing such issues. We hope that you will find these articles useful in providing a comprehensive understanding of the kinds of risks and threats we face today. Finally, as always, we showcase our Centre’s activities for the year and the varied publications of our researchers in 2023.