Big Four or Big 4 may refer to:

Groups of companies

Big Four accounting firms The Big Four are the four largest professional services networks in the world: Deloitte, Ernst & Young, EY, KPMG, and PwC. They are the four largest global accounting networks as measured by revenue. The four are often grouped because they ar ...

globally: Deloitte, Ernst & Young, KPMG, PwC * Big Four (airlines) in the U.S. in the 20th century: American, Eastern, TWA, United *

Big Four (banking) The Big Four (or Big 4) is the colloquial name given to the four main banks in several countries where the banking industry is dominated by just four institutions and where the phrase has thus gained relevance. Some countries include more or fe ...

, several groupings of banks in different countries *

Big Four (British railway companies) The "Big Four" was a name used to describe the four largest railway companies in the United Kingdom in the period 1923–1947. The name was coined by ''The Railway Magazine'' in its issue of February 1923: "The Big Four of the New Railway Era". ...

in the period 1923–1947: GWR, LMS, LNER, SR * Big Four Railroad, a nickname of the Cleveland, Cincinnati, Chicago and St. Louis Railway in the U.S. * The "Big Four"

Big Tech Big Tech, also referred to as the Tech Giants or Tech Titans, is a collective term for the largest and most influential technology companies in the world. The label draws a parallel to similar classifications in other industries, such as "Big Oi ...

companies: Apple, Amazon, Alphabet, Meta Platforms * Big Four television networks in the U.S.: ABC, CBS, DuMont/FOX, NBC * Big Four radio networks in the U.S.: NBC Red, NBC Blue, CBS, & Mutual * The "Big Four" largest UK ITV companies 1955–1968: * Japanese Big Four motorcycle manufacturers: Honda, Kawasaki, Suzuki, Yamaha

Groups of people

* Big Four (Central Pacific Railroad), 19th century American railroad entrepreneurs * Big Four (debutantes), in the Chicago social scene during World War I * Big Four (Najaf), leading Grand Ayatollahs of Twelver Shia Islam * The Four Companions, the most loyal companions of Muhammad and Ali * Big Four (Scotland Yard), London detectives of about 1919 * Big Four of Maryland Thoroughbred racing, horse trainers in the 1960s–1970s * The Big Four (Calgary), Alberta cattlemen of the early 20th century * The Four Greats (Norwegian writers): Ibsen, Bjørnson, Lie, Kielland

Groups in sport

* Big Four (Canadian football), a forerunner competition to the Canadian Football League East Division * Big Four (English football) in the 2000s: Arsenal, Chelsea, Liverpool, Manchester United * Big Four (Mexico), a group of the top four football clubs in Mexico: Club América, Chivas, Cruz Azul and Pumas * Big Four (cycling) in the 2020s: Pogačar, Vingegaard, Roglič, and Evenepoel * Big Four (polo), an American polo team of the early 20th century * Big Four (tennis), from 2008 to 2017: Federer, Nadal, Djokovic, Murray * Big Four, the leading

major professional sports leagues in the United States and Canada Major professional sports, professional sports leagues in the United States and Canada traditionally include four leagues: Major League Baseball (MLB), the National Basketball Association (NBA), the National Football League (NFL), and the Nationa ...

: MLB, NBA, NFL, NHL * Big-4 League, a senior ice hockey league in Canada between 1919 and 1921

Other groups

Big Four (Western Europe) The Big Four, also known as G4, refers to France, Germany, Italy and the United Kingdom. France and the United Kingdom are official nuclear-weapon states and are permanent members of the United Nations Security Council with the power of veto, ...

: France, Germany, Italy, and the United Kingdom *

Big Four Conference The term Big Four Conference may refer to one of several conferences between heads of state or foreign ministers of the victorious nations after World War I (1914–18) or during and after World War II (1939–45). Post-World War I After World Wa ...

, various conferences between the victorious nations after World War I and World War II * Big Four (World War I), the four major Allied powers: United States, United Kingdom, France, Italy * Big Four (World War II), or Four Policemen: United States, United Kingdom, China, Soviet Union * Big Four

outlaw motorcycle club An outlaw motorcycle club, known colloquially as a biker club or club (in Australia), is a motorcycle subculture generally centered on the use of Cruiser (motorcycle), cruiser motorcycles, particularly Harley-Davidsons and chopper (motorcycle ...

s: Hells Angels, Pagans, Outlaws, Bandidos *

Big Four international beauty pageants The Big Four or the Big League Pageants refers to the four major international beauty pageants for women — Miss World, Miss Universe, Miss International and Miss Earth. The group was first described by the ''China Daily'' newspaper in ...

: Miss Earth, Miss International, Miss Universe, and Miss World * Big Four (universities), the top four universities in the Philippines

Arts, entertainment and media

* Big Four (band), a Hong Kong music group *

Big Four (Eurovision) The Eurovision Song Contest (), often known simply as Eurovision, is an international Music competition, song competition organised annually by the European Broadcasting Union (EBU) among its members since 1956. Each participating broadcaster ...

, the four main sponsoring countries before 2011 * Big Four (Grammy Awards) or the General Field, four standard awards * The Big Four (fashion), the 4 most notable Vogue covers: American Vogue, British Vogue, Vogue France and Vogue Italia * '' The Big Four: Live from Sofia, Bulgaria'' a 2010 concert recording * The Big Four

fashion week A fashion week is a week-long fashion industry event where fashion designers, brands, or "houses" display their latest collections in runway fashion shows to buyers and the media which influences upcoming fashion trends for the current and appro ...

s: New York City, London, Milan and Paris * Big Four, a key rhythmic innovation on the marching band beat, invented by

Buddy Bolden Charles Joseph "Buddy" Bolden (September 6, 1877 – November 4, 1931) was an American cornetist who was regarded by contemporaries and later jazz scholars as a key figure in the development of a New Orleans style of ragtime music, or "jass ...

* ''Big 4'' (sculpture), outside the Channel 4 headquarters in London * ''The Big Four'' (novel), by Agatha Christie, 1927 * '' The Big 4'', a 2022 Indonesian movie * The Big Four of

thrash metal Thrash metal (or simply thrash) is an Extreme metal, extreme subgenre of heavy metal music characterized by its overall aggression and fast tempo.Kahn-Harris, Keith, ''Extreme Metal: Music and Culture on the Edge'', pp. 2–3, 9. Oxford: Berg, ...

: Metallica, Megadeth, Slayer and Anthrax

Places

* Big Four, West Virginia, U.S. * Big Four Bridge, connecting Louisville, Kentucky, and Jeffersonville, Indiana, U.S. * Big Four Mountain, Washington, U.S.

Other uses

* Big 4 (lottery), a game in the Pennsylvania Lottery *

Big Four (Indian snakes) The four venomous snake species responsible for causing the greatest number of medically significant human snake bite cases on the Indian subcontinent (majorly in India and Sri Lanka) are sometimes collectively referred to as the Big Four. They ...

, four snake species responsible for the most snake-bites in India *

Big Four (White Star Line) The "Big Four" were a quartet of early-20th-century 20,000-ton ocean liners built by the Harland & Wolff shipyard for the White Star Line, to be the largest and most luxurious ships afloat. The group consisted of , , and . Origin In 1899, Whi ...

, four British ocean liners of the early 20th century * Norton Big 4, a British motorcycle 1907–1954