Perovskite solar cells are emerging as a transformative technology in photovoltaic community owing to their rapid growth in efficiency and low production cost. However, their commercial application is hindered due to lack of sustained stability primarily caused by interfacial defects and vulnerable metal electrodes. The incorporation of two-dimensional (2D) materials in perovskite solar cells have gained significant interest in recent times because of their excellent properties like high charge mobility, high conductivity, tunable bandgap, good optical transparency and their ability to form van der Waals heterojunction at the bottom interface. The role of 2D materials in perovskite solar cells as electron transport layer (ETL), hole transport layer (HTL), interfacial layer, and contact back electrodes has been discussed thoroughly in this chapter. The comparison of photovoltaic performance before and after incorporating 2D materials clearly indicates that 2D materials not only helps in increasing the efficiency but enhances the sustained stability also because of reduced nonradiative recombination, reduced defects and improved energy level alignment. In the end, some challenges in this field of study are recognized and future prospects are discussed.