Big Four

There are two places named Big Four in the United States.

Big Four can also refer to:

Big Four auditors.
The 'Big Four' outlaw motorcycle gangs.
a nickname for a railroad in the United States of America officially called the Cleveland, Cincinnati, Chicago and St. Louis Railroad (later absorbed by the New York Central Railroad).
the four major media giants which dominate the global music market: EMI, Sony-BMG, Warner, and Universal. These were originally the Big Five, but Sony and BMG merged.
name given to the four biggest banks in Ireland, these are: Allied Irish Banks, Bank of Ireland, National Irish Bank (Northern Bank in Northern Ireland) and Ulster Bank.
name given to the four biggest banks in the United Kingdom, these are: Lloyds TSB, the Royal Bank of Scotland, Barclays Bank and HSBC.
name given to the four biggest banks in Australia, these are: the National Australia Bank, the Commonwealth Bank, Westpac and ANZ.
name given to the four large banks in the People's Republic of China, these are the Bank of China, the China Construction Bank, the Industrial and Commercial Bank of China and the Agricultural Bank of China.
The four major U.S. television networks: ABC, NBC, CBS and Fox
The four major IRC Networks: Quakenet, Undernet, EFNet, IRCNet
The Big Four was the collective name given to four railroad magnates in the western U.S.: Collis P. Huntington, Leland Stanford, Mark Hopkins and Charles Crocker
The Big Four (novel) was an Agatha Christie book