Nano-Enhanced Phase Change Material (NePCM) is a promising technology aimed at reducing glob-al energy consumption by maximizing the thermal capacity and minimizing heat loss of traditional phase change materials (PCMs). The superior heat capacities, thermal conductivities, and stability of NePCMs have been the subject of extensive research, and this review aims to classify recently inves-tigated NePCMs based on their components and melting temperatures. By providing a comprehen-sive classification of NePCMs reported in the literature, considering their melting temperature and composition, this review offers a deeper understanding of these materials. Furthermore, the review delves into the various applications of NePCM in thermal management systems (TMS) and describes current methods for improving their performance by modifying geometric parameters and configura-tions. Additionally, a new classification is introduced for NePCMs that do not fit directly into exist-ing PCM categories, and a stack bar chart is created to cross-reference this classification with tem-perature and composition. The review also identifies gaps in the literature and suggests areas for fu-ture research, providing a valuable resource for those interested in this field.