The Big Six is the name colloquially given to the six largest
advertising
Advertising is the practice and techniques employed to bring attention to a Product (business), product or Service (economics), service. Advertising aims to present a product or service in terms of utility, advantages, and qualities of int ...
and
public relations
Public relations (PR) is the practice of managing and disseminating information from an individual or an organization (such as a business, government agency, or a nonprofit organization) to the public in order to influence their perception. Pu ...
agencies in the world by revenue:
Publicis
Publicis Groupe S.A. is a French multinational advertising and public relations company. As of 2024, the company is the largest advertising company in the world by revenue. Based in Paris, it is one of the 'Big Four' advertising commpanies, al ...
,
WPP,
Omnicom
Omnicom Group Inc. is an American global media, marketing and corporate communications holding company, headquartered in New York City.
Omnicom's branded networks and specialty firms provide services in four disciplines: advertising, customer r ...
,
IPG,
Dentsu
, simply known as , stylized as dentsu, is a Japanese international advertising and public relations joint stock company headquartered in Tokyo. Dentsu is the largest advertising agency in Japan and the fifth largest advertising agency network in ...
, and
Havas
Havas NV () is a French multinational corporation, multinational advertising agency, advertising and public relations company, with its registered office and head office in Puteaux, France.
Havas operates in more than 100 countries. The group ...
.
See also
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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 ...
*
Big Three (management consultancies)
The Big Three or MBB refers to management consulting firms McKinsey & Company, Boston Consulting Group, and Bain & Company. Widely considered the most prestigious strategy consulting firms in the world, the three companies are distinguished by t ...
*
Big Three (credit rating agencies)
The Big Three credit rating agencies are S&P Global Ratings (S&P), Moody's, and Fitch Group. S&P and Moody's are based in the US, while Fitch is dual-headquartered in New York City and London, and is controlled by Hearst. As of 2013 they hol ...
References
{{DEFAULTSORT:Big Four Auditors
Advertising agencies
Public relations companies