Capo di tutti capi or capo dei capi, often referred to as the Godfather in english, is Italian for "boss of all bosses" or "boss of bosses". It is a phrase used mainly by the media, public and the law enforcement community to indicate a supremely powerful crime boss in the Sicilian or American Mafia who holds great influence over the whole organization.

The title was introduced to the U.S. public by the Kefauver Commission (1950). It has seldom been given to specific bosses because it could create tension between different factions (otherwise known as families) within the Mafia. Typically the title is awarded de facto to the boss of the most powerful Mafia family.

The word was applied by mobsters to Giuseppe Morello around 1900, according to Nick Gentile. Bosses Joe Masseria (1928-1931) and Salvatore Maranzano (1931) used the title as part of their efforts to centralize control of the Mafia under themselves. When Maranzano won the Castellammarese War, he set himself up as boss of all bosses and ordered every Mafia family to pay him tribute. This provoked a rebellious reaction which led to him being murdered. Lucky Luciano then created The Commission in 1931 as an alternative.

Boyko Metodiev Borisov (Bulgarian: Бойко Методиев Борисов, IPA: [ˈbɔjko mɛˈtɔdiɛf boˈrisof]; born 13 June 1959) is a Bulgarian politician who has been Prime Minister of Bulgaria since July 2009. Previously he was Mayor of Sofia from 8 November 2005 until his election as Prime Minister.

After his party, GERB, won the July 2009 parliamentary election, Borisov became Bulgaria's 50th Prime Minister on 27 July 2009.

Borisov was born in 1959 in Bankya (then a village, today a town part of greater Sofia) to Ministry of Internal Affairs official Metodi Borisov and elementary school teacher Veneta Borisova. Between 1982 and 1990, he assumed different positions in the Ministry of Internal Affairs as a firefighter and later as a professor at the Police Academy in Sofia. As a National Security Office member, Borisov took part in the protection of crops and haylofts during the name-changing campaign towards ethnic Turks in the 1980s. He quit the Ministry in 1990. In 1991 he founded a private security company, Ipon-1, and later guarded personalities like Todor Zhivkov and Simeon II. Borisov has been actively participating in karate championships since 1978, serving as the coach of the Bulgarian national team and a referee of international matches. He currently has a 7^th dan black belt in karate and is the chairman of the Bulgarian Karate Federation. Borisov has also been a coach for the Bulgarian national karate team for many years.