Guido Donegani (26 March 1877, in Livorno โ 16 April 1947, in Bordighera), was a prominent Italian engineer, businessman and politician. He was CEO and President of the Italian chemical industrial giant Montecatini from 1910-1945. Due to his support to the Fascist regime of Benito Mussolini he was arrested at the end of the Second World War, but acquitted of charges of collaboration.