M. Robert Aaron (August 21, 1922 – June 16, 2007) was an American electrical engineer specializing in telecommunications.
Aaron was born in Philadelphia, served in the United States Coast Guard during World War II, received his bachelor's (1949) and master's degree (1951) in Electrical Engineering from the University of Pennsylvania, and in 1951 joined Bell Laboratories in Murray Hill, New Jersey. There he helped design networks for various transmission systems, including TAT-1, the first repeatered transatlantic telephone cable system. He was also a key contributor to design of T1, the initial T-carrier system.
Aaron was a member of the National Academy of Engineering (1979), Fellow of the Institute of Electrical and Electronics Engineers and American Association for the Advancement of Science, and co-recipient of the IEEE Alexander Graham Bell Medal (1978).
He died in West Palm Beach, Florida in 2007.