Topological insulators (TIs) have garnered significant attention in recent years due to their unique electronic propertiesElectronic Properties, which combine insulating bulk states with conductive surface statesSurface states protected by time-reversal symmetryTime-reversal symmetry. These materials exhibit robust surface conductivity, making them promising candidates for next-generation thermoelectric devicesThermoelectric devices. This mini-review explores the recent advancements in the application of topological insulatorsTopological insulators in thermoelectric devicesThermoelectric devices. We discuss the fundamental properties of TIs, their potential advantages in enhancing thermoelectric performanceThermoelectric performance, and the challenges that remain in realizing their full potential in practical applications. The review concludes with a perspective on future research directions that could bridge the gap between theoretical predictions and experimental realizations in this emerging field.