Silvio Berlusconi (help·info) (born 29 September 1936) is an Italian politician, entrepreneur, real estate and insurance tycoon, bank and media proprietor, sports team owner and composer. He is the longest-serving Prime Minister of Italy, a position he has held on three separate occasions: from 1994 to 1995, from 2001 to 2006 and currently since 2008. He is the leader of the People of Freedom political movement, a centre-right party he founded in 2009, merging Forza Italia, his own party, with Alleanza Nazionale of Gianfranco Fini and other parties. His victory in the 2008 general elections paved the way for a third term in office. As of November 2009, he is the longest-serving current leader of a G8 country.

Berlusconi is the proprietor of three analogue television channels, various digital television channels, as well as some of the larger-circulation national news magazines. Together these account for nearly half the Italian market. He is the founder and major shareholder of Fininvest, which is among the ten largest privately owned companies in Italy and currently operates in media and finance. With Ennio Doris he founded Mediolanum, one of the country's biggest banking and insurance groups. Berlusconi, together with the Saudi Prince Al-Waleed bin Talal, is the main shareholder of Mediaset, a publicly traded company. He is the owner of the Italian football club A.C. Milan, which has won a number of national and international trophies under his ownership.

According to Forbes magazine, Berlusconi is Italy's third richest person, with personal assets worth $9.4 billion (USD) in 2008, preceded only by Michele Ferrero and Leonardo del Vecchio.