Angelo Oliviero Olivetti (21 June 1874 – 17 November 1931) was an Italian lawyer, journalist, and political activist. Olivetti was born in Ravenna, Italy. In 1892 while a student at the University of Bologna he joined the Italian Socialist Party. Following accusations of subversive activity, he fled to Switzerland in 1898. There he eventually met Benito Mussolini. Finding only limited support for his views within the socialist movement, in 1906 he began publishing Pagine Libre, a journal devoted to revolutionary syndicalism. He was expelled from Switzerland in 1912.