Ragunathan "Raj" Rajkumar (born 1963) is the George Westinghouse Professor of Electrical and Computer Engineering at Carnegie Mellon University in Pittsburgh, Pennsylvania. He is also affiliated with the Robotics Institute and the Heinz School of Information Systems and Public Policy at Carnegie Mellon University. He also serves as the Director of the Metro21 Smart Cities Institute and as the Director of the Mobility21 USDOT National University Transportation Center at Carnegie Mellon University. He also leads the General Motors-CMU Connected and Autonomous Driving Collaborative Research Laboratory (CAD-CRL), and the Real-Time and Multimedia Systems Lab (RTML) there.