Tommaso Toffoli () is a professor of electrical and computer engineering at Boston University. He joined the faculty in 1995. He was born in 1943 in Montereale Valcellina, in northeastern Italy, and was raised in Rome. He received his doctorate in physics from the University of Rome La Sapienza in 1967. In 1976 he received a Ph.D. in computer and communication science from the University of Michigan. In 1977, he joined the faculty of Massachusetts Institute of Technology. He currently lives in Cambridge, Massachusetts, and has two children.
He has worked on cellular automata and the theory of artificial life (with Edward Fredkin and others), and is known for the invention of the Toffoli gate.