Big Four or Big 4 may refer to:

Groups of companies Big Four accounting firms globally: Deloitte, EY, KPMG, PwC Big Four (airlines) in the U.S. in the 20th century: American, Eastern, TWA, United Big Four (banking), several groupings of banks in different countries Big Four (British railway companies) 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 companies: Apple, Amazon, Alphabet, Meta Platforms Big Four television networks in the U.S.: NBC, CBS, ABC and DuMont initially, then NBC, CBS, ABC, and Fox Big Four radio networks in the U.S.: NBC Red, NBC Blue, CBS, and Mutual The "Big Four" largest UK ITV companies 1955–1968: Japanese Big Four motorcycle manufacturers: Honda, Kawasaki, Suzuki, Yamaha Big Four (record labels), major record labels (Universal, Sony, Warner, and BMG) Big Four state-owned car manufacturers in China: SAIC Motor, FAW Group, Changan Automobile, Dongfeng Motor Corporation.

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 of Maryland Thoroughbred racing, horse trainers in the 1960s–1970s The Big Four (Calgary), Alberta cattlemen of the early 20th century

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 (Turkish Football), a group of the top four football clubs in Turkey: Fenerbahçe, Galatasaray, Beşiktaş and Trabzonspor 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: MLB, NBA, NFL, NHL Big-4 League, a senior ice hockey league in Canada between 1919 and 1921 Big four (boxing), the four major sanctioning organizations: IBF, WBA, WBC, WBO

Other groups Big Four (Western Europe): France, Germany, Italy, and the United Kingdom Big Four Conference, 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 clubs: Hells Angels, Pagans, Outlaws, Bandidos Big Four international beauty pageants: 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 four main sponsoring countries before 2011 and after 2025 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 weeks: New York City, London, Milan and Paris The Big Four (film studios): Universal, Skydance, Walt Disney, and Sony Big Four, a key rhythmic innovation on the marching band beat, invented by Buddy Bolden 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

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), four snake species responsible for the most snake-bites in India Big Four (White Star Line), four British ocean liners of the early 20th century Norton Big 4, a British motorcycle 1907–1954 The Big Four, restaurant in the Huntington Hotel (San Francisco)

See also

Big One (disambiguation) Big Two (disambiguation) Big Three (disambiguation) Big Five (disambiguation) Big Six (disambiguation) Big Seven (disambiguation) Big Eight (disambiguation) Big Ten (disambiguation) Big 12 (disambiguation) Core Four Fab Four Quadruple Alliance (disambiguation)