Mohammad Khaja Nazeeruddin (born 1957 in Thumboor, Andhra Pradesh, India) is an Indian-Swiss chemist and materials scientist who conducts research on  Perovskite solar cells, dye-sensitized solar cells, and light-emitting diodes. He is a professor at EPFL (École Polytechnique Fédérale de Lausanne) and the director of the Laboratory for Molecular Engineering of Functional Materials at School of Basic Sciences.