Alfredo Acton, 1st barone Acton (12 September 1867 – 26 March 1934) was an Italian admiral, politician and Chief of Staff of the Regia Marina (Italy's Royal Navy). He was born in Castellammare di Stabia, a descendant of the Acton family which had originated in England before moving to Tuscany. His great-grandfather was General Joseph Edward Acton (1737–1830), brother of Sir John Acton, 6th Baronet, commander of the naval forces of the Grand Duchy of Tuscany and prime minister of Naples. His father was Ferdinando Acton and his uncle Guglielmo Acton, Minister for the Navy. His aunt Laura Acton was married to Marco Minghetti, prime minister of Italy.