Manlio Giovanni Brosio (July 10, 1897 – March 14, 1980) was an Italian lawyer, diplomat, politician and the fourth Secretary General of NATO between 1964 and 1971. Brosio was born in Turin and studied law in the local university. During the World War I, he served in Alpine regiment as an artillery officer. After the war, he graduated and in 1920 he entered politics. Later his political activity was barred because of his opposition of Fascism. Brosio died in Torino.