Severo M. Ornstein is an American retired computer scientist and the son of composer Leo Ornstein. In 1955, he joined MIT's Lincoln Laboratory as a programmer and designer for the SAGE air-defense system. He later joined the TX-2 group and became a member of the team that designed the LINC. He moved with the team to Washington University in St. Louis where he was one of the principal designers of macromodules.
