Luigi Dadda (April 29, 1923 – October 26, 2012) was an Italian computer engineer, best known for the design of the Dadda multiplier and as one of the first researchers on modern computers in Italy. He was rector at the Politecnico di Milano technical university from 1972 to 1984, collaborating on research at the same university until 2012. He was a Life Fellow of the IEEE. He studied electrical engineering at the Politecnico di Milano and graduated in 1947 with a thesis on signal transmission, a microwave radio bridge between the cities of Turin and Trieste.